disable shadows casted by viewmodels, more perf stats

Source/Game/Console/EngineSubsystem.cs

@@ -219,7 +219,21 @@ namespace Game
 
                 globals.SetValue("Scene Lighting", boolValue);
 
-                // TODO: make sure AO is disabled (it's not)
+
+                PostFxVolume postFx = Level.FindActor<PostFxVolume>();
+                if (postFx != null)
+                {
+                    AmbientOcclusionSettings aoSettings = postFx.AmbientOcclusion;
+                    /*aoSettings.OverrideFlags = (aoSettings.OverrideFlags & ~AmbientOcclusionSettingsOverride.Enabled) |
+                                               (boolValue
+                                                   ? AmbientOcclusionSettingsOverride.Enabled
+                                                   : 0 & AmbientOcclusionSettingsOverride.Enabled);
+                    */
+                    aoSettings.Enabled = boolValue;
+                    postFx.AmbientOcclusion = aoSettings;
+                }
+
+                // TODO: disable GI
 
                 Light[] lights = Level.GetActors<Light>();
                 foreach (Light light in lights)