diff --git a/Code/Framework/AzCore/AzCore/Time/TimeSystem.cpp b/Code/Framework/AzCore/AzCore/Time/TimeSystem.cpp
index cd0170749f..a5e0908ac4 100644
--- a/Code/Framework/AzCore/AzCore/Time/TimeSystem.cpp
+++ b/Code/Framework/AzCore/AzCore/Time/TimeSystem.cpp
@@ -124,14 +124,13 @@ namespace AZ
         const TimeUs currentTimeUs = static_cast<TimeUs>(AZStd::GetTimeNowMicroSecond());
 
         //real time
-        m_realTickDeltaTimeUs = currentTimeUs - m_lastRealTickTimeUs;
-        m_lastRealTickTimeUs = currentTimeUs;
+        m_realTickDeltaTimeUs = currentTimeUs - m_lastSimulationTickTimeUs;
 
         //game time
         if (m_simulationTickDeltaOverride > AZ::Time::ZeroTimeUs)
         {
             m_simulationTickDeltaTimeUs = m_simulationTickDeltaOverride;
-            m_lastSimulationTickTimeUs = m_simulationTickDeltaTimeUs;
+            m_lastSimulationTickTimeUs = currentTimeUs;
             return m_simulationTickDeltaTimeUs;
         }
 
diff --git a/Code/Framework/AzCore/AzCore/Time/TimeSystem.h b/Code/Framework/AzCore/AzCore/Time/TimeSystem.h
index d2587c76d8..ded70c9be5 100644
--- a/Code/Framework/AzCore/AzCore/Time/TimeSystem.h
+++ b/Code/Framework/AzCore/AzCore/Time/TimeSystem.h
@@ -74,8 +74,7 @@ namespace AZ
         //! Updated in AdvanceTickDeltaTimes().
         TimeUs m_realTickDeltaTimeUs = AZ::Time::ZeroTimeUs;
 
-        TimeUs m_lastSimulationTickTimeUs = AZ::Time::ZeroTimeUs; //!< Used to determine the game tick delta time (affected by cvars).
-        TimeUs m_lastRealTickTimeUs = AZ::Time::ZeroTimeUs; //!< Used to determine the real game tick delta time (not affected by cvars).
+        TimeUs m_lastSimulationTickTimeUs = AZ::Time::ZeroTimeUs; //!< Used to determine the game tick delta time.
 
         TimeUs m_simulationTickDeltaOverride = AZ::Time::ZeroTimeUs; //<! Stores the TimeUs value of the t_simulationTickDeltaOverride cvar.
         TimeUs m_simulationTickLimitTimeUs = AZ::Time::ZeroTimeUs; //<! Stores the TimeUs value of the t_simulationTickRate cvar.