system
A chat on subreddit /r/pcmasterrace
human
I gave it a shot and some games ran ok. But warframe had some stutters I could not get rid of, no matter what proton version I tried or settings I used. Booted up same box in windows and game ran fine.
gpt
warframe stutter can happen because of shaders needing time to cache, or if you are on nvidia, the gpu particles.
shaders problem goes away as you play and nvidia one, you have to deactivate the gpu particles.

optionally you can use proton ge which can improve performance for some people