UE5.5 MRQ Runtime: Scene Flickering After 30 Minutes – AA & Lumen Settings?

Hey there! Sorry for the delay. I am cirling back around and trying to repro this. I have not been successful. Can you double check me here?

I made a runtime MRQ BP based on the documentation you linked to above.
I made a render config with 3 spatial samples and 1 temporal and linked that in the BP
I hit PIE and let it sit for 40 minutes
When I fire the render I don’t see any flickering.

Can you spot anything I am missing here?