the only thing i've ever ran into was somehow getting stuck at a multiple of the fps that gamescope was set to, for example the game rendering at 120fps when gamescope was set to lock at 60, 60fps if set to 30fps, etc. and only with RE engine games, like Street Fighter 6 or Resident Evil 4, i can get it to happen if i muck with the settings too much, gotta restart the entire steam deck to fix it