Bizarre problem. Occlusion culling / View Visibility takes a long time (7ms on an empty scene, 11ms on my actual level) only when the application/editor is either maximized, or fullscreen.
See this video for a demonstration in the editor where I’m just making the window bigger and you can see the
stat initviews oscillating between 0.11ms and 7ms: 7ms Occlusion Cull only when Unreal maximized - YouTube
This is Unreal 5.0.3-20979098. Running with Lumen on. Scene is an empty, completely default scene. No rendering plugins are in this project.
Any idea on what could be causing this?
Attached is my DxDiag:
DxDiag.txt (111.2 KB)