

For ancient stuff, maybe, but AMD is also active in enabling new stuff in the kernel and userspace. AMD basically invented Vulkan, and have had the best open source driver stack for years at this point.
I love what Valve has done for Linux, but it’s the last mile of track at the end of huge amounts of outside work enabling the hardware to work in the first place.







Are you running the native version or through Proton? When I played Civ VI the Linux native version performed worse than using Proton, ironically. Either way, maybe try switching?
Since you specified multiplayer I’m guessing it’s not time to load from disk or anything.