I’m running a Radeon 6770 on my home machine, running Mint and running Baulder’s Gate 3 under Steam, and have been having some surfaces sparkle or not show correctly when running it with Vulkan in Proton, though everything looks perfect when using DirectX. It also looks correct in both modes when run on Steam deck. What is this phenomenon, just a bug in my graphics driver and Vulkan? None of my other games exhibit this issue.
I’m getting similar issues with a 7900xtx in vulkan (distro is guix). So I’ts definitely not the age of the card. I tried messing with the settings and have been unable to fix it.
Maybe switching to dx11 is the trick here? I haven’t tried it yet.