https://bugs.freedesktop.org/show_bug.cgi?id=109461
--- Comment #2 from Kai kai@dev.carbon-project.org --- (In reply to Michel Dänzer from comment #1)
Is this a regression, and if so, can you bisect? Note that it could be a Mesa/LLVM issue rather than a kernel one.
Technically yes. But I don't know a (reasonable) good version, because the last time I played this game was in 2017. Between then and now there were many updates for the game (the last one is from 2019-01-11) and an incredible amount of commits for the kernel, Mesa and LLVM.
I'm not even sure if I still used the radeon module the last time or if I was already on amdgpu.