I use OpenSUSE Tumbleweed, and I've never had trouble running a game that's rated gold or above. I've even gotten an Easy AntiCheat game to work correctly.

I've been gaming on linux exclusively for about 8 years now and have had very few issues running windows games. Sometimes the windows version, run through proton, runs better than the native port. I don't tend to be playing AAA games right after launch day, though. So it could be taste is affecting my experience.