hey, also a new user, but a little more experienced. Some stuff just works differently for other people honestly, it's all mix and match with HW, distro's SW. Don't use commands that dont work of course and try a different version of proton. Proton experimental is usually the way to go for a lot of games, may be best to set it as global on steam (steam->settings->compatibility-> change to proton experimental)
Hopefully this helps. My game was fine :> it might also be the games fault, it does not seem okay. From what I've seen some peope do have insane stutters.