diff --git a/.gitignore b/.gitignore
index 24af068c53..eb24d72701 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,3 +18,4 @@ _savebackup/
 #Output folder for test results when running Automated Tests
 TestResults/**
 *.swatches
+/imgui.ini
diff --git a/Gems/Atom/Feature/Common/Code/Source/ProfilingCaptureSystemComponent.cpp b/Gems/Atom/Feature/Common/Code/Source/ProfilingCaptureSystemComponent.cpp
index 38c30d67a6..9cc98a15ec 100644
--- a/Gems/Atom/Feature/Common/Code/Source/ProfilingCaptureSystemComponent.cpp
+++ b/Gems/Atom/Feature/Common/Code/Source/ProfilingCaptureSystemComponent.cpp
@@ -186,7 +186,7 @@ namespace AZ
         {
             for (const RPI::Pass* pass : passes)
             {
-                m_timestampEntries.push_back({ pass->GetName(), pass->GetTimestampResult().GetTimestampInNanoseconds() });
+                m_timestampEntries.push_back({pass->GetName(), pass->GetLatestTimestampResult().GetDurationInNanoseconds()});
             }
         }
 
@@ -223,7 +223,7 @@ namespace AZ
         {
             for (const RPI::Pass* pass : passes)
             {
-                m_pipelineStatisticsEntries.push_back({ pass->GetName(), pass->GetPipelineStatisticsResult() });
+                m_pipelineStatisticsEntries.push_back({pass->GetName(), pass->GetLatestPipelineStatisticsResult()});
             }
         }
 
diff --git a/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/GpuQuery/GpuQueryTypes.h b/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/GpuQuery/GpuQueryTypes.h
index 80a72aaf55..ae86557170 100644
--- a/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/GpuQuery/GpuQueryTypes.h
+++ b/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/GpuQuery/GpuQueryTypes.h
@@ -11,6 +11,7 @@
 */
 #pragma once
 
+#include <Atom/RHI.Reflect/AttachmentEnums.h>
 #include <Atom/RHI.Reflect/QueryPoolDescriptor.h>
 
 #include <AtomCore/std/containers/array_view.h>
@@ -43,15 +44,19 @@ namespace AZ
         {
         public:
             TimestampResult() = default;
-            TimestampResult(uint64_t timestampInTicks);
-            TimestampResult(uint64_t timestampQueryResultLow, uint64_t timestampQueryResultHigh);
-            TimestampResult(AZStd::array_view<TimestampResult>&& timestampResultArray);
+            TimestampResult(uint64_t beginTick, uint64_t endTick, RHI::HardwareQueueClass hardwareQueueClass);
 
-            uint64_t GetTimestampInNanoseconds() const;
-            uint64_t GetTimestampInTicks() const;
+            uint64_t GetDurationInNanoseconds() const;
+            uint64_t GetDurationInTicks() const;
+            uint64_t GetTimestampBeginInTicks() const;
+
+            void Add(const TimestampResult& extent);
 
         private:
-            uint64_t m_timestampInTicks = 0u;
+            // the timestamp of begin and duration in ticks.
+            uint64_t m_begin = 0;
+            uint64_t m_duration = 0;
+            RHI::HardwareQueueClass m_hardwareQueueClass = RHI::HardwareQueueClass::Graphics;
         };
 
         //! The structure that is used to read back the results form the PipelineStatistics queries 
diff --git a/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/Pass/ParentPass.h b/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/Pass/ParentPass.h
index 9317158437..b4f63a7099 100644
--- a/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/Pass/ParentPass.h
+++ b/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/Pass/ParentPass.h
@@ -122,7 +122,6 @@ namespace AZ
 
         private:
             // RPI::Pass overrides...
-            TimestampResult GetTimestampResultInternal() const override;
             PipelineStatisticsResult GetPipelineStatisticsResultInternal() const override;
 
             // --- Hierarchy related functions ---
diff --git a/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/Pass/Pass.h b/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/Pass/Pass.h
index ae249a5f45..b0d6bd4117 100644
--- a/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/Pass/Pass.h
+++ b/Gems/Atom/RPI/Code/Include/Atom/RPI.Public/Pass/Pass.h
@@ -211,11 +211,11 @@ namespace AZ
             //! Prints the pass
             virtual void DebugPrint() const;
 
-            //! Return the Timestamp result of this pass
-            TimestampResult GetTimestampResult() const;
+            //! Return the latest Timestamp result of this pass
+            TimestampResult GetLatestTimestampResult() const;
 
-            //! Return the PipelineStatistic result of this pass
-            PipelineStatisticsResult GetPipelineStatisticsResult() const;
+            //! Return the latest PipelineStatistic result of this pass
+            PipelineStatisticsResult GetLatestPipelineStatisticsResult() const;
 
             //! Enables/Disables Timestamp queries for this pass
             virtual void SetTimestampQueryEnabled(bool enable);
diff --git a/Gems/Atom/RPI/Code/Source/RPI.Public/GpuQuery/GpuQueryTypes.cpp b/Gems/Atom/RPI/Code/Source/RPI.Public/GpuQuery/GpuQueryTypes.cpp
index a1b2ece4dc..715964651f 100644
--- a/Gems/Atom/RPI/Code/Source/RPI.Public/GpuQuery/GpuQueryTypes.cpp
+++ b/Gems/Atom/RPI/Code/Source/RPI.Public/GpuQuery/GpuQueryTypes.cpp
@@ -21,41 +21,39 @@ namespace AZ
     namespace RPI
     {
         // --- TimestampResult ---
-
-        TimestampResult::TimestampResult(uint64_t timestampInTicks)
+        TimestampResult::TimestampResult(uint64_t beginTick, uint64_t endTick, RHI::HardwareQueueClass hardwareQueueClass)
         {
-            m_timestampInTicks = timestampInTicks;
+            AZ_Assert(endTick >= beginTick, "TimestampResult: bad inputs");
+            m_begin = beginTick;
+            m_duration = endTick - beginTick;
+            m_hardwareQueueClass = hardwareQueueClass;
         }
 
-        TimestampResult::TimestampResult(uint64_t timestampQueryResultLow, uint64_t timestampQueryResultHigh)
-        {
-            const uint64_t low  = AZStd::min(timestampQueryResultLow, timestampQueryResultHigh);
-            const uint64_t high = AZStd::max(timestampQueryResultLow, timestampQueryResultHigh);
-
-            m_timestampInTicks = high - low;
-        }
-
-        TimestampResult::TimestampResult(AZStd::array_view<TimestampResult>&& timestampResultArray)
-        {
-            // Loop through all the child passes, and accumulate all the timestampTicks
-            for (const TimestampResult& timestampResult : timestampResultArray)
-            {
-                m_timestampInTicks += timestampResult.m_timestampInTicks;
-            }
-        }
-
-        uint64_t TimestampResult::GetTimestampInNanoseconds() const
+        uint64_t TimestampResult::GetDurationInNanoseconds() const
         {
             const RHI::Ptr<RHI::Device> device = RHI::GetRHIDevice();
-            const AZStd::chrono::microseconds timeInMicroseconds = device->GpuTimestampToMicroseconds(m_timestampInTicks, RHI::HardwareQueueClass::Graphics);
+            const AZStd::chrono::microseconds timeInMicroseconds = device->GpuTimestampToMicroseconds(m_duration, m_hardwareQueueClass);
             const auto timeInNanoseconds = AZStd::chrono::nanoseconds(timeInMicroseconds);
 
             return static_cast<uint64_t>(timeInNanoseconds.count());
         }
 
-        uint64_t TimestampResult::GetTimestampInTicks() const
+        uint64_t TimestampResult::GetDurationInTicks() const
         {
-            return m_timestampInTicks;
+            return m_duration;
+        }
+
+        uint64_t TimestampResult::GetTimestampBeginInTicks() const
+        {
+            return m_begin;
+        }
+
+        void TimestampResult::Add(const TimestampResult& extent)
+        {
+            uint64_t end1 = m_begin + m_duration;
+            uint64_t end2 = extent.m_begin + extent.m_duration;
+            m_begin = m_begin < extent.m_begin ? m_begin : extent.m_begin;
+            m_duration = (end1 > end2 ? end1 : end2) - m_begin;
         }
 
         // --- PipelineStatisticsResult ---
diff --git a/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/ParentPass.cpp b/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/ParentPass.cpp
index 6314ae376e..106ef82bf1 100644
--- a/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/ParentPass.cpp
+++ b/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/ParentPass.cpp
@@ -393,19 +393,6 @@ namespace AZ
             }
         }
 
-        TimestampResult ParentPass::GetTimestampResultInternal() const
-        {
-            AZStd::vector<TimestampResult> timestampResultArray;
-            timestampResultArray.reserve(m_children.size());
-
-            // Calculate the Timestamp result by summing all of its child's TimestampResults
-            for (const Ptr<Pass>& childPass : m_children)
-            {
-                timestampResultArray.emplace_back(childPass->GetTimestampResult());
-            }
-            return TimestampResult(timestampResultArray);
-        }
-
         PipelineStatisticsResult ParentPass::GetPipelineStatisticsResultInternal() const
         {
             AZStd::vector<PipelineStatisticsResult> pipelineStatisticsResultArray;
@@ -414,7 +401,7 @@ namespace AZ
             // Calculate the PipelineStatistics result by summing all of its child's PipelineStatistics
             for (const Ptr<Pass>& childPass : m_children)
             {
-                pipelineStatisticsResultArray.emplace_back(childPass->GetPipelineStatisticsResult());
+                pipelineStatisticsResultArray.emplace_back(childPass->GetLatestPipelineStatisticsResult());
             }
             return PipelineStatisticsResult(pipelineStatisticsResultArray);
         }
diff --git a/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/Pass.cpp b/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/Pass.cpp
index 5ecf293efe..9401d1a9e0 100644
--- a/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/Pass.cpp
+++ b/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/Pass.cpp
@@ -1273,24 +1273,14 @@ namespace AZ
             }
         }
 
-        TimestampResult Pass::GetTimestampResult() const
+        TimestampResult Pass::GetLatestTimestampResult() const
         {
-            if (IsEnabled() && IsTimestampQueryEnabled())
-            {
-                return GetTimestampResultInternal();
-            }
-
-            return TimestampResult();
+            return GetTimestampResultInternal();
         }
 
-        PipelineStatisticsResult Pass::GetPipelineStatisticsResult() const
+        PipelineStatisticsResult Pass::GetLatestPipelineStatisticsResult() const
         {
-            if (IsEnabled() && IsPipelineStatisticsQueryEnabled())
-            {
-                return GetPipelineStatisticsResultInternal();
-            }
-
-            return PipelineStatisticsResult();
+            return GetPipelineStatisticsResultInternal();
         }
 
         TimestampResult Pass::GetTimestampResultInternal() const
diff --git a/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/RenderPass.cpp b/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/RenderPass.cpp
index 19a4f3d302..1fad385fa6 100644
--- a/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/RenderPass.cpp
+++ b/Gems/Atom/RPI/Code/Source/RPI.Public/Pass/RenderPass.cpp
@@ -539,7 +539,7 @@ namespace AZ
                 const uint32_t TimestampResultQueryCount = 2u;
                 uint64_t timestampResult[TimestampResultQueryCount] = {0};
                 query->GetLatestResult(&timestampResult, sizeof(uint64_t) * TimestampResultQueryCount);
-                m_timestampResult = TimestampResult(timestampResult[0], timestampResult[1]);
+                m_timestampResult = TimestampResult(timestampResult[0], timestampResult[1], RHI::HardwareQueueClass::Graphics);
             });
 
             ExecuteOnPipelineStatisticsQuery([this](RHI::Ptr<Query> query)
diff --git a/Gems/Atom/Tools/MaterialEditor/Code/Source/Viewport/PerformanceMonitorComponent.cpp b/Gems/Atom/Tools/MaterialEditor/Code/Source/Viewport/PerformanceMonitorComponent.cpp
index afe3cc6fb6..513bedb55f 100644
--- a/Gems/Atom/Tools/MaterialEditor/Code/Source/Viewport/PerformanceMonitorComponent.cpp
+++ b/Gems/Atom/Tools/MaterialEditor/Code/Source/Viewport/PerformanceMonitorComponent.cpp
@@ -109,8 +109,8 @@ namespace MaterialEditor
         AZ::RHI::Ptr<AZ::RPI::ParentPass> rootPass = AZ::RPI::PassSystemInterface::Get()->GetRootPass();
         if (rootPass)
         {
-            AZ::RPI::TimestampResult timestampResult = rootPass->GetTimestampResult();
-            double gpuFrameTimeMs = aznumeric_cast<double>(timestampResult.GetTimestampInNanoseconds()) / 1000000;
+            AZ::RPI::TimestampResult timestampResult = rootPass->GetLatestTimestampResult();
+            double gpuFrameTimeMs = aznumeric_cast<double>(timestampResult.GetDurationInNanoseconds()) / 1000000;
             m_gpuFrameTimeMs.PushSample(gpuFrameTimeMs);
         }
     }
diff --git a/Gems/Atom/Utils/Code/Include/Atom/Utils/ImGuiGpuProfiler.h b/Gems/Atom/Utils/Code/Include/Atom/Utils/ImGuiGpuProfiler.h
index 8936f15e55..6520844edd 100644
--- a/Gems/Atom/Utils/Code/Include/Atom/Utils/ImGuiGpuProfiler.h
+++ b/Gems/Atom/Utils/Code/Include/Atom/Utils/ImGuiGpuProfiler.h
@@ -93,7 +93,9 @@ namespace AZ
             ImGuiPipelineStatisticsView();
 
             //! Draw the PipelineStatistics window.
-            void DrawPipelineStatisticsWindow(bool& draw, const PassEntry* rootPassEntry, AZStd::unordered_map<AZ::Name, PassEntry>& m_timestampEntryDatabase);
+            void DrawPipelineStatisticsWindow(bool& draw, const PassEntry* rootPassEntry,
+                AZStd::unordered_map<AZ::Name, PassEntry>& m_timestampEntryDatabase,
+                AZ::RHI::Ptr<AZ::RPI::ParentPass> rootPass);
 
             //! Total number of columns (Attribute columns + PassName column).
             static const uint32_t HeaderAttributeCount = PassEntry::PipelineStatisticsAttributeCount + 1u;
@@ -139,6 +141,9 @@ namespace AZ
 
             // ImGui filter used to filter passes by the user's input.
             ImGuiTextFilter m_passFilter;
+                        
+            // Pause and showing the pipeline statistics result when it's paused.
+            bool m_paused = false;
         };
 
         class ImGuiTimestampView
@@ -180,9 +185,19 @@ namespace AZ
                 Count
             };
 
+            // Timestamp refresh type .
+            enum class RefreshType : int32_t
+            {
+                Realtime = 0,
+                OncePerSecond,
+                Count
+            };
+
         public:
             //! Draw the Timestamp window.
-            void DrawTimestampWindow(bool& draw, const PassEntry* rootPassEntry, AZStd::unordered_map<Name, PassEntry>& m_timestampEntryDatabase);
+            void DrawTimestampWindow(bool& draw, const PassEntry* rootPassEntry,
+                AZStd::unordered_map<Name, PassEntry>& m_timestampEntryDatabase,
+                AZ::RHI::Ptr<AZ::RPI::ParentPass> rootPass);
 
         private:
             // Draw option for the hierarchical view of the passes.
@@ -223,6 +238,20 @@ namespace AZ
 
             // ImGui filter used to filter passes.
             ImGuiTextFilter m_passFilter;
+
+            // Pause and showing the timestamp result when it's paused.
+            bool m_paused = false;
+
+            // Hide non-parent passes which has 0 execution time.
+            bool m_hideZeroPasses = false;
+
+            // Show pass execution timeline
+            bool m_showTimeline = false;
+
+            // Controls how often the timestamp data is refreshed
+            RefreshType m_refreshType = RefreshType::OncePerSecond;
+            AZStd::sys_time_t m_lastUpdateTimeMicroSecond;
+
         };
 
         class ImGuiGpuProfiler
diff --git a/Gems/Atom/Utils/Code/Include/Atom/Utils/ImGuiGpuProfiler.inl b/Gems/Atom/Utils/Code/Include/Atom/Utils/ImGuiGpuProfiler.inl
index a2b29f3fb7..c00533f740 100644
--- a/Gems/Atom/Utils/Code/Include/Atom/Utils/ImGuiGpuProfiler.inl
+++ b/Gems/Atom/Utils/Code/Include/Atom/Utils/ImGuiGpuProfiler.inl
@@ -105,9 +105,9 @@ namespace AZ
 
             // [GFX TODO][ATOM-4001] Cache the timestamp and PipelineStatistics results.
             // Get the query results from the passes.
-            m_timestampResult = pass->GetTimestampResult();
+            m_timestampResult = pass->GetLatestTimestampResult();
 
-            const RPI::PipelineStatisticsResult rps = pass->GetPipelineStatisticsResult();
+            const RPI::PipelineStatisticsResult rps = pass->GetLatestPipelineStatisticsResult();
             m_pipelineStatistics = { rps.m_vertexCount, rps.m_primitiveCount, rps.m_vertexShaderInvocationCount,
                 rps.m_rasterizedPrimitiveCount, rps.m_renderedPrimitiveCount, rps.m_pixelShaderInvocationCount, rps.m_computeShaderInvocationCount };
 
@@ -153,7 +153,9 @@ namespace AZ
 
         }
 
-        inline void ImGuiPipelineStatisticsView::DrawPipelineStatisticsWindow(bool& draw, const PassEntry* rootPassEntry, AZStd::unordered_map<Name, PassEntry>& passEntryDatabase)
+        inline void ImGuiPipelineStatisticsView::DrawPipelineStatisticsWindow(bool& draw,
+            const PassEntry* rootPassEntry, AZStd::unordered_map<Name, PassEntry>& passEntryDatabase,
+            AZ::RHI::Ptr<RPI::ParentPass> rootPass)
         {
             // Early out if nothing is supposed to be drawn
             if (!draw)
@@ -188,12 +190,6 @@ namespace AZ
                         continue;
                     }
 
-                    // Filter out disabled passes for the PipelineStatistics window if necessary.
-                    if (!m_showDisabledPasses && !passEntry.IsPipelineStatisticsEnabled())
-                    {
-                        continue;
-                    }
-
                     // Filter out parent passes if necessary.
                     if (!m_showParentPasses && passEntry.m_isParent)
                     {
@@ -230,6 +226,13 @@ namespace AZ
             // Start drawing the PipelineStatistics window.
             if (ImGui::Begin("PipelineStatistics Window", &draw, ImGuiWindowFlags_NoResize))
             {
+                // Pause/unpause the profiling
+                if (ImGui::Button(m_paused ? "Resume" : "Pause"))
+                {
+                    m_paused = !m_paused;
+                    rootPass->SetPipelineStatisticsQueryEnabled(!m_paused);
+                }
+
                 ImGui::Columns(2, "HeaderColumns");
 
                 // Draw the statistics of the RootPass.
@@ -426,23 +429,16 @@ namespace AZ
                     }
 
                     AZStd::string label;
-                    if (passEntry->IsPipelineStatisticsEnabled())
+                    if (rootEntry && m_showAttributeContribution)
                     {
-                        if (rootEntry && m_showAttributeContribution)
-                        {
-                            label = AZStd::string::format("%llu (%u%%)",
-                                static_cast<AZ::u64>(passEntry->m_pipelineStatistics[attributeIdx]),
-                                static_cast<uint32_t>(normalized * 100.0f));
-                        }
-                        else
-                        {
-                            label = AZStd::string::format("%llu",
-                                static_cast<AZ::u64>(passEntry->m_pipelineStatistics[attributeIdx]));
-                        }
+                        label = AZStd::string::format("%llu (%u%%)",
+                            static_cast<AZ::u64>(passEntry->m_pipelineStatistics[attributeIdx]),
+                            static_cast<uint32_t>(normalized * 100.0f));
                     }
                     else
                     {
-                        label = "-";
+                        label = AZStd::string::format("%llu",
+                            static_cast<AZ::u64>(passEntry->m_pipelineStatistics[attributeIdx]));
                     }
 
                     if (rootEntry)
@@ -523,7 +519,9 @@ namespace AZ
 
         // --- ImGuiTimestampView ---
 
-        inline void ImGuiTimestampView::DrawTimestampWindow(bool& draw, const PassEntry* rootPassEntry, AZStd::unordered_map<Name, PassEntry>& timestampEntryDatabase)
+        inline void ImGuiTimestampView::DrawTimestampWindow(
+            bool& draw, const PassEntry* rootPassEntry, AZStd::unordered_map<Name, PassEntry>& timestampEntryDatabase,
+            AZ::RHI::Ptr<RPI::ParentPass> rootPass)
         {
             // Early out if nothing is supposed to be drawn
             if (!draw)
@@ -534,10 +532,28 @@ namespace AZ
             // Clear the references from the previous frame.
             m_passEntryReferences.clear();
 
+            // pass entry grid based on its timestamp
+            AZStd::vector<PassEntry*> sortedPassEntries;
+            AZStd::vector<AZStd::vector<PassEntry*>> sortedPassGrid;
+
             // Set the child of the parent, only if it passes the filter.
             for (auto& passEntryIt : timestampEntryDatabase)
             {
                 PassEntry* passEntry = &passEntryIt.second;
+
+                // Collect all pass entries with non-zero durations
+                if (passEntry->m_timestampResult.GetDurationInTicks() > 0)
+                {
+                    sortedPassEntries.push_back(passEntry);
+                }
+
+                // Skip the pass if the pass' timestamp duration is 0
+                if (m_hideZeroPasses && (!passEntry->m_isParent) && passEntry->m_timestampResult.GetDurationInTicks() == 0)
+                {
+                    continue;
+                }
+
+                // Only add pass if it pass the filter.
                 if (m_passFilter.PassFilter(passEntry->m_name.GetCStr()))
                 {
                     if (passEntry->m_parent && !passEntry->m_linked)
@@ -545,19 +561,94 @@ namespace AZ
                         passEntry->m_parent->LinkChild(passEntry);
                     }
 
-                    AZ_Assert(m_passEntryReferences.size() < TimestampEntryCount, "Too many PassEntry references. Increase the size of the array.");
+                    AZ_Assert(
+                        m_passEntryReferences.size() < TimestampEntryCount,
+                        "Too many PassEntry references. Increase the size of the array.");
                     m_passEntryReferences.push_back(passEntry);
                 }
             }
 
+            // Sort the pass entries based on their starting time and duration
+            AZStd::sort(sortedPassEntries.begin(), sortedPassEntries.end(), [](const PassEntry* passEntry1, const PassEntry* passEntry2) {
+                if (passEntry1->m_timestampResult.GetTimestampBeginInTicks() == passEntry2->m_timestampResult.GetTimestampBeginInTicks())
+                {
+                    return passEntry1->m_timestampResult.GetDurationInTicks() < passEntry2->m_timestampResult.GetDurationInTicks();
+                }
+                return passEntry1->m_timestampResult.GetTimestampBeginInTicks() < passEntry2->m_timestampResult.GetTimestampBeginInTicks();
+            });
+
+            // calculate the total GPU duration.
+            RPI::TimestampResult gpuTimestamp;
+            if (sortedPassEntries.size() > 0)
+            {
+                gpuTimestamp = sortedPassEntries.front()->m_timestampResult;
+                gpuTimestamp.Add(sortedPassEntries.back()->m_timestampResult);
+            }
+
+            // Add a pass to the pass grid which none of the pass's timestamp range won't overlap each other.
+            // Search each row until the pass can be added to the end of row without overlap the previous one.
+            for (auto& passEntry : sortedPassEntries)
+            {
+                auto row = sortedPassGrid.begin();
+                for (; row != sortedPassGrid.end(); row++)
+                {
+                    if (row->empty())
+                    {
+                        break;
+                    }
+                    auto last = (*row).back();
+                    if (passEntry->m_timestampResult.GetTimestampBeginInTicks() >=
+                        last->m_timestampResult.GetTimestampBeginInTicks() + last->m_timestampResult.GetDurationInTicks())
+                    {
+                        row->push_back(passEntry);
+                        break;
+                    }
+                }
+                if (row == sortedPassGrid.end())
+                {
+                    sortedPassGrid.push_back();
+                    sortedPassGrid.back().push_back(passEntry);
+                }
+            }
+
+            // Refresh timestamp query
+            bool needEnable = false;
+            if (!m_paused)
+            {
+                if (m_refreshType == RefreshType::OncePerSecond)
+                {
+                    auto now = AZStd::GetTimeNowMicroSecond();
+                    if (m_lastUpdateTimeMicroSecond == 0 || now - m_lastUpdateTimeMicroSecond > 1000000)
+                    {
+                        needEnable = true;
+                        m_lastUpdateTimeMicroSecond = now;
+                    }
+                }
+                else if (m_refreshType == RefreshType::Realtime)
+                {
+                    needEnable = true;
+                }
+            }
+
+            if (rootPass->IsTimestampQueryEnabled() != needEnable)
+            {
+                rootPass->SetTimestampQueryEnabled(needEnable);
+            }
+
             const ImVec2 windowSize(680.0f, 620.0f);
             ImGui::SetNextWindowSize(windowSize, ImGuiCond_Always);
             if (ImGui::Begin("Timestamp View", &draw, ImGuiWindowFlags_NoResize))
             {
                 // Draw the header.
                 {
+                    // Pause/unpause the profiling
+                    if (ImGui::Button(m_paused? "Resume":"Pause"))
+                    {
+                        m_paused = !m_paused;
+                    }
+
                     // Draw the frame time (GPU).
-                    const AZStd::string formattedTimestamp = FormatTimestampLabel(rootPassEntry->m_interpolatedTimestampInNanoseconds);
+                    const AZStd::string formattedTimestamp = FormatTimestampLabel(gpuTimestamp.GetDurationInNanoseconds());
                     const AZStd::string headerFrameTime = AZStd::string::format("Total frame duration (GPU): %s", formattedTimestamp.c_str());
                     ImGui::Text(headerFrameTime.c_str());
 
@@ -566,6 +657,17 @@ namespace AZ
                     ImGui::SameLine();
                     ImGui::RadioButton("Flat", reinterpret_cast<int32_t*>(&m_viewType), static_cast<int32_t>(ProfilerViewType::Flat));
 
+                    // Draw the refresh option
+                    ImGui::RadioButton("Realtime", reinterpret_cast<int32_t*>(&m_refreshType), static_cast<int32_t>(RefreshType::Realtime));
+                    ImGui::SameLine();
+                    ImGui::RadioButton("Once Per Second", reinterpret_cast<int32_t*>(&m_refreshType), static_cast<int32_t>(RefreshType::OncePerSecond));
+
+                    // Show/hide non-parent passes which have zero execution time
+                    ImGui::Checkbox("Hide Zero Cost Passes", &m_hideZeroPasses);
+
+                    // Show/hide the timeline bar of all the passes which has non-zero execution time
+                    ImGui::Checkbox("Show Timeline", &m_showTimeline);
+
                     // Draw advanced options.
                     const ImGuiTreeNodeFlags flags = ImGuiTreeNodeFlags_None;
                     GpuProfilerImGuiHelper::TreeNode("Advanced options", flags, [this](bool unrolled)
@@ -587,6 +689,56 @@ namespace AZ
 
                 ImGui::Separator();
 
+                // Draw the pass entry grid
+                if (!sortedPassEntries.empty() && m_showTimeline)
+                {
+                    const float passBarHeight = 20.f;
+                    const float passBarSpace = 3.f;
+                    float areaWidth = ImGui::GetContentRegionAvail().x - 20.f;
+
+                    if (ImGui::BeginChild("Timeline", ImVec2(areaWidth, (passBarHeight + passBarSpace) * sortedPassGrid.size()), false))
+                    {
+                        // start tick and end tick for the area
+                        uint64_t areaStartTick = sortedPassEntries.front()->m_timestampResult.GetTimestampBeginInTicks();
+                        uint64_t areaEndTick = sortedPassEntries.back()->m_timestampResult.GetTimestampBeginInTicks() +
+                            sortedPassEntries.back()->m_timestampResult.GetDurationInTicks();
+                        uint64_t areaDurationInTicks = areaEndTick - areaStartTick;
+
+                        float rowStartY = 0.f;
+                        for (auto& row : sortedPassGrid)
+                        {
+                            // row start y 
+                            for (auto passEntry : row)
+                            {
+                                // button start and end
+                                float buttonStartX = (passEntry->m_timestampResult.GetTimestampBeginInTicks() - areaStartTick) * areaWidth /
+                                    areaDurationInTicks;
+                                float buttonWidth =  passEntry->m_timestampResult.GetDurationInTicks() * areaWidth / areaDurationInTicks;
+                                ImGui::SetCursorPosX(buttonStartX);
+                                ImGui::SetCursorPosY(rowStartY);
+
+                                // Adds a button and the hover colors.
+                                ImGui::Button(passEntry->m_name.GetCStr(), ImVec2(buttonWidth, passBarHeight));
+
+                                if (ImGui::IsItemHovered())
+                                {
+                                    ImGui::BeginTooltip();
+                                    ImGui::Text("Name: %s", passEntry->m_name.GetCStr());
+                                    ImGui::Text("Path: %s", passEntry->m_path.GetCStr());
+                                    ImGui::Text("Duration in ticks: %u", passEntry->m_timestampResult.GetDurationInTicks());
+                                    ImGui::Text("Duration in microsecond: %.3f us", passEntry->m_timestampResult.GetDurationInNanoseconds()/1000.f);
+                                    ImGui::EndTooltip();
+                                }
+                            }
+
+                            rowStartY += passBarHeight + passBarSpace;
+                        }
+                    }
+                    ImGui::EndChild();
+
+                    ImGui::Separator();
+                }
+
                 // Draw the timestamp view.
                 {
                     static const AZStd::array<const char*, static_cast<int32_t>(TimestampMetricUnit::Count)> MetricUnitText =
@@ -713,20 +865,18 @@ namespace AZ
             const auto drawWorkloadBar = [this](const AZStd::string& entryTime, const PassEntry* entry)
             {
                 ImGui::NextColumn();
-                ImGui::Text(entryTime.c_str());
-                ImGui::NextColumn();
-
-                // Only draw the workload bar when the entry is enabled.
-                if (entry->IsTimestampEnabled())
+                if (entry->m_isParent)
                 {
-                    DrawFrameWorkloadBar(NormalizeFrameWorkload(entry->m_interpolatedTimestampInNanoseconds));
+                    ImGui::NextColumn();
+                    ImGui::NextColumn();
                 }
                 else
                 {
-                    ImGui::ProgressBar(0.0f, ImVec2(-1.0f, 0.0f), "Disabled");
+                    ImGui::Text(entryTime.c_str());
+                    ImGui::NextColumn();
+                    DrawFrameWorkloadBar(NormalizeFrameWorkload(entry->m_interpolatedTimestampInNanoseconds));
+                    ImGui::NextColumn();
                 }
-
-                ImGui::NextColumn();
             };
 
             static const auto createHoverMarker = [](const char* text)
@@ -800,23 +950,17 @@ namespace AZ
             // Draw the flat view.
             for (const PassEntry* entry : m_passEntryReferences)
             {
+                if (entry->m_isParent)
+                {
+                    continue;
+                }
                 const AZStd::string entryTime = FormatTimestampLabel(entry->m_interpolatedTimestampInNanoseconds);
 
                 ImGui::Text(entry->m_name.GetCStr());
                 ImGui::NextColumn();
                 ImGui::Text(entryTime.c_str());
                 ImGui::NextColumn();
-
-                // Only draw the workload bar if the entry is enabled.
-                if (entry->IsTimestampEnabled())
-                {
-                    DrawFrameWorkloadBar(NormalizeFrameWorkload(entry->m_interpolatedTimestampInNanoseconds));
-                }
-                else
-                {
-                    ImGui::ProgressBar(0.0f, ImVec2(-1.0f, 0.0f), "Disabled");
-                }
-
+                DrawFrameWorkloadBar(NormalizeFrameWorkload(entry->m_interpolatedTimestampInNanoseconds));
                 ImGui::NextColumn();
             }
         }
@@ -890,23 +1034,33 @@ namespace AZ
             // Update the PassEntry database.
             const PassEntry* rootPassEntryRef = CreatePassEntries(rootPass);
 
+            bool wasDraw = draw;
+
             GpuProfilerImGuiHelper::Begin("Gpu Profiler", &draw, ImGuiWindowFlags_NoResize, [this, &rootPass]()
             {
-                ImGui::Checkbox("Enable TimestampView", &m_drawTimestampView);
+                if (ImGui::Checkbox("Enable TimestampView", &m_drawTimestampView))
+                {
+                    rootPass->SetTimestampQueryEnabled(m_drawTimestampView);
+                }
                 ImGui::Spacing();
-                ImGui::Checkbox("Enable PipelineStatisticsView", &m_drawPipelineStatisticsView);
+                if(ImGui::Checkbox("Enable PipelineStatisticsView", &m_drawPipelineStatisticsView))
+                {
+                    rootPass->SetPipelineStatisticsQueryEnabled(m_drawPipelineStatisticsView);
+                }
             });
 
             // Draw the PipelineStatistics window.
-            m_timestampView.DrawTimestampWindow(m_drawTimestampView, rootPassEntryRef, m_passEntryDatabase);
+            m_timestampView.DrawTimestampWindow(m_drawTimestampView, rootPassEntryRef, m_passEntryDatabase, rootPass);
 
             // Draw the PipelineStatistics window.
-            m_pipelineStatisticsView.DrawPipelineStatisticsWindow(m_drawPipelineStatisticsView, rootPassEntryRef, m_passEntryDatabase);
+            m_pipelineStatisticsView.DrawPipelineStatisticsWindow(m_drawPipelineStatisticsView, rootPassEntryRef, m_passEntryDatabase, rootPass);
 
-            // [GFX TODO][ATOM-13792] Optimization: ImGui GpuProfiler Pass hierarchy traversal.
-            // Enable/Disable the Timestamp and PipelineStatistics on the RootPass
-            rootPass->SetTimestampQueryEnabled(draw && m_drawTimestampView);
-            rootPass->SetPipelineStatisticsQueryEnabled(draw && m_drawPipelineStatisticsView);
+            //closing window
+            if (wasDraw && !draw)
+            {
+                rootPass->SetTimestampQueryEnabled(false);
+                rootPass->SetPipelineStatisticsQueryEnabled(false);
+            }
         }
 
         inline void ImGuiGpuProfiler::InterpolatePassEntries(AZStd::unordered_map<Name, PassEntry>& passEntryDatabase, float weight) const
@@ -918,7 +1072,7 @@ namespace AZ
                 {
                     // Interpolate the timestamps.
                     const double interpolated = Lerp(static_cast<double>(oldEntryIt->second.m_interpolatedTimestampInNanoseconds),
-                        static_cast<double>(entry.second.m_timestampResult.GetTimestampInNanoseconds()),
+                        static_cast<double>(entry.second.m_timestampResult.GetDurationInNanoseconds()),
                         static_cast<double>(weight));
                     entry.second.m_interpolatedTimestampInNanoseconds = static_cast<uint64_t>(interpolated);
                 }
diff --git a/Gems/ImGui/Code/Source/ImGuiManager.cpp b/Gems/ImGui/Code/Source/ImGuiManager.cpp
index 697cc61f86..c446c98175 100644
--- a/Gems/ImGui/Code/Source/ImGuiManager.cpp
+++ b/Gems/ImGui/Code/Source/ImGuiManager.cpp
@@ -222,6 +222,10 @@ void ImGuiManager::Initialize()
     io.DisplaySize.x = 1920;
     io.DisplaySize.y = 1080;
 
+    // Create a default font
+    io.Fonts->AddFontDefault();
+    io.Fonts->Build();
+
     // Broadcast ImGui Ready to Listeners
     ImGuiUpdateListenerBus::Broadcast(&IImGuiUpdateListener::OnImGuiInitialize);
     m_currentControllerIndex = -1;