diff --git a/Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Settings/CarlaSettingsDelegate.cpp b/Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Settings/CarlaSettingsDelegate.cpp
index 559f98b99..b362966a8 100644
--- a/Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Settings/CarlaSettingsDelegate.cpp
+++ b/Unreal/CarlaUE4/Plugins/Carla/Source/Carla/Settings/CarlaSettingsDelegate.cpp
@@ -14,6 +14,8 @@
 #include "InstancedFoliageActor.h"
 #include "Kismet/GameplayStatics.h"
 #include "Landscape.h"
+#include "Scalability.h"
+
 
 static constexpr float CARLA_SETTINGS_MAX_SCALE_SIZE = 50.0f;
 
@@ -71,11 +73,15 @@ void UCarlaSettingsDelegate::ApplyQualityLevelPostRestart()
   UWorld *InWorld = CarlaSettings->GetWorld();
 
   const EQualityLevel QualityLevel = CarlaSettings->GetQualityLevel();
+
   if (AppliedLowPostResetQualityLevel == QualityLevel)
   {
     return;
   }
 
+  // enable temporal changes of quality (prevent saving last quality settings to file)
+  Scalability::ToggleTemporaryQualityLevels(true);
+
   switch (QualityLevel)
   {
     case EQualityLevel::Low:
@@ -159,13 +165,17 @@ void UCarlaSettingsDelegate::CheckCarlaSettings(UWorld *world)
 
 void UCarlaSettingsDelegate::LaunchLowQualityCommands(UWorld *world) const
 {
+  if (!world)
+  {
+    return;
+  }
+
   // launch commands to lower quality settings
   GEngine->Exec(world, TEXT("r.DefaultFeature.MotionBlur 0"));
   GEngine->Exec(world, TEXT("r.DefaultFeature.Bloom 0"));
   GEngine->Exec(world, TEXT("r.DefaultFeature.AmbientOcclusion 0"));
   GEngine->Exec(world, TEXT("r.AmbientOcclusionLevels 0"));
   GEngine->Exec(world, TEXT("r.DefaultFeature.AmbientOcclusionStaticFraction 0"));
-  GEngine->Exec(world, TEXT("r.DefaultFeature.AutoExposure 0"));
   GEngine->Exec(world, TEXT("r.RHICmdBypass 0"));
   GEngine->Exec(world, TEXT("r.DefaultFeature.AntiAliasing 2"));
   GEngine->Exec(world, TEXT("r.Streaming.PoolSize 2000"));
@@ -207,6 +217,8 @@ void UCarlaSettingsDelegate::LaunchLowQualityCommands(UWorld *world) const
   GEngine->Exec(world, TEXT("r.OcclusionQueryLocation 1"));
   // GEngine->Exec(world,TEXT("r.BasePassOutputsVelocity 0")); //--> readonly
   // GEngine->Exec(world,TEXT("r.DetailMode 0")); //-->will change to lods 0
+  GEngine->Exec(world, TEXT("r.DefaultFeature.AutoExposure 1"));
+
 }
 
 void UCarlaSettingsDelegate::SetAllRoads(
@@ -357,6 +369,7 @@ void UCarlaSettingsDelegate::LaunchEpicQualityCommands(UWorld *world) const
   {
     return;
   }
+
   GEngine->Exec(world, TEXT("r.AmbientOcclusionLevels -1"));
   GEngine->Exec(world, TEXT("r.RHICmdBypass 1"));
   GEngine->Exec(world, TEXT("r.DefaultFeature.AntiAliasing 2"));