Seems WASD is smooth, but I can’t play like that. When I use my mouse (Logitech G903) I get a stutter every few seconds. I also get a stutter when the fat shark is just about to crash into the screen in the opening video when starting the game. I can’t fathom why this would be related to my mouse, and it used to happen earlier in the video. During gameplay normal mouse movement results in a frequent hang-and-skip, overshooting simple panning.
The issue still persists. The fat shark still paused before impact, but when I got into the game I thought the issue was resolved. After running around in the crumbling tower for about 30 seconds, the intermittent (every 2-5 seconds) stutter returned.