No, the issue is extreme Y-axis speed when there's high FPS. Disabling V-sync unlocks the framerate, making the game MUCH smoother, but this results in places like indoor areas to have varying Y-axis speed. Staring at Jarl's throne, for instance.
Yeah, sorry, wasn't aware of that. Seen people asking how to fix the original issue of low vert sensitivity everywhere, figured it was the same complaint. Honestly I'd say just re-enable vsync and deal with staying at 60 fps for now, or else get used to doing a lot of tiny adjustments to those sensitivity values. :\