Alright, emulation was the wrong word to use. Still, the performance on Proton is noticeably worse compared to playing on Windows on the same hardware, at least

Alright, emulation was the wrong word to use. Still, the performance on Proton is noticeably worse compared to playing on Windows on the same hardware, at least for a decent chunk of games. I'll generally get similar FPS with a lot more GPU/CPU usage or overall lower FPS.