Am I to believe that cheaters would install Linux, just use a cheat in a game?
You seem to severely underestimate the extreme lengths cheaters will go to in order to cheat. Not only are modern cheats very expensive (like 20+ dollars per WEEK subscriptions), but the ones that are the hardest to detect require a second PC connected to the main PC using a direct memory access module so that the cheat can read the game’s memory in a way that is impossible to notice for the Anti-Cheat running on the game PC. On top of that they spend time and money on stolen/farmed accounts, spoofing hardware and phone numbers, and buying entirely new PCs when they get detected and banned.
Installing Linux is a tiny obstacle compared to all the other shit these losers are willing to go through in order to cheat.
Highly depends on the type of game. For First person shooters, 120+ fps is a must. I skipped the more recent CoDs because I couldn’t get them to run at that target consistently enough on my PC without turning them into blurry DLSS smear.
Racing games, where motion is typically always going in one direction with only smooth direction changes, a lower framerate is fine (like 60 to 80), although the added smoothness from high framerate is obviously still nice.
Slower paced or turn based games I’m fine with going as low as 40 FPS, as long as it’s consistent without drops and frame pacing issues.