On Windows, I never ran into any stutters or frame drops, but in both Ubuntu and Garuda Linux the game always dipped to 140-200 fps, and never had a stable FPS. It got much more erratic once I turned on Anti aliasing and Ambient Occlusion. If you play on a 60 or 144hz monitor this probably isn't noticeable on my tier of hardware. If you play on anything above that, (240hz in my case) you are better off with a source port like nBlood or Raze.