Recent testing revealed that Arch Linux, Pop!_OS, and even Nobara Linux, which is maintained by a single developer, all outstripped Windows for the performance crown on Windows-native games. The testing was run at the high-end of quality settings, and Valve's Proton was used to run Windows games on Linux.
I have over 200 hours in cyberpunk on Linux. The gog version is a little bit more work to setup the steam version. If you have it on steam, and have steam installed natively (not inside wine) it should work assuming you have the correct GPU drivers installed.
I’ve always had weird, buggy shit with Nvidias Linux drivers. AMD is pretty great though.
You could try an open source game like xonotic that supports Linux to test as well.