I play on debian stable with steam. Its playable but debian is so far behind on packages that it makes no sense if you‘re sensitive to differences in fps or want peak performance.
Especially if you‘re using an nvidia card its definitely less fun on debian. I made good experiences with pop!os.
If you compare framerates I suggest windows though since linux users usually want a functional, privacy friendly OS which allows them to own their hardware and then comes peak game performance. If trash OS and privacy invasion is cool for you, go for it.
Not saying the performance on average isnt on par but the games are just not made for linux and its not „dead easy“ in every game yet.