I'm hijacking this thread to ask a question:

Bazzite latest MESA how?

I can see that the driver released on the 18th is available on Fedora Rawhide, but it may contain the fix I need that removes graphical artefacting in Unreal Engine 5 games like Oblivion Remastered, Avowed, and Dune Awakening (checking the MESA developer forums shows that they've identified the problem. Checking their git shows they've found a fix to the problem, hence why I'm expecting the fix to be in the version release of the 18th).