Updated assets to 5.2; Removed Cave Example; Try to set vsync correctly

Config/DefaultEngine.ini

@@ -7,12 +7,12 @@ AppliedDefaultGraphicsPerformance=Maximum
 [/Script/EngineSettings.GameMapsSettings]
 EditorStartupMap=/Game/Maps/Main.Main
 GameDefaultMap=/Game/Maps/Main.Main
+GlobalDefaultGameMode=/RWTHVRToolkit/RWTHVRGameMode.RWTHVRGameMode_C
 
 [/Script/DisplayClusterEditor.DisplayClusterEditorSettings]
 bEnabled=True
 
 [/Script/Engine.RendererSettings]
-r.VSync=1
 r.DefaultFeature.Bloom=False
 r.DefaultFeature.AutoExposure=False
 r.DefaultFeature.MotionBlur=False

Config/Linux/LinuxEngine.ini

@@ -5,3 +5,6 @@ GameViewportClientClassName=/Script/DisplayCluster.DisplayClusterViewportClient
 
 [/Script/Engine.RendererSettings]
 r.DefaultBackBufferPixelFormat = 1
+
+[SystemSettings]
+r.Vsync=1