For me its usually this. I once had engine crash 3 times in a row withing 20 seconds after launch in a level with several basic objects. Pure quality.
[2023.10.22-17.41.53:824][707]LogWindows: Error: appError called: Assertion failed: Tasks.OcclusionCull.IsCompleted() [File:D:\build++UE5\Sync\Engine\Source\Runtime\Renderer\Private\SceneVisibilityPrivate.h] [Line: 317]