I’ve tried restarting everything a few times as well as reinstalling the game and starting a new game. Played in full screen and windowed. Probably unrelated, but noticed a thin green border like underscan in windowed, which is new. Nothing seems to work. Mouse works fine in all menus and buttons work to swing weapon, etc. just doesn’t look around at all.
Edit: Apparently Comodo Security can interfere with it; saw on another post. Will try tonight.
2nd edit: Yeah, disabled Comodo’s auto-containment and it works now :)