I never had this problem before, but it showed up today after some gameplay. I played a bit without visiting the menu, and 'destinations' since it started right where I left off in an episode. Everything was working just fine, no movement of the UI at all, and everything was working smoothly like always. Suddenly, shortly after I went there and decided to remove the pathfinder notification since it was bothersome, the game started lagging and then suddenly the UI was moving with the mouse cursor. I tried to delete and redownload, and check if there were any settings I should change but nothing. I don't know if they're related, but the movement which happens both in and out of gameplay is honestly nauseating. Is there any way to fix this? The game was updated before playing, but the problem didn't start until after I left the episode I started on.