That might happen if there were two render threads, I suppose. Oh, and it is VR. Maybe the left/right eyes are on separate threads and they are out of sync somehow. They should be using some kind of thread sync for that tho.
I don’t have any VR experience, I just wanted to put the possibility out there.
I’d check to see if maybe the VR system is getting started up too early somehow. Maybe an actor is running their tick before BeginPlay. Or maybe there’s a way to start the VR system off and then turn it on once you’re sure it is safe.
Again, I’m just throwing ideas. Since you asked this 8 hours ago I figure it can’t hurt.