Using two-finger scrolling on a laptop, the screen jumps 5-10 pages with the slightest movement. A normal mousewheel works fine, and the two-finger scrolling does too on every other application (including other PDF viewers). There seems to be a bug with the scroll speed, many other people have noticed it:
https://forums.adobe.com/thread/2240294
https://forums.adobe.com/thread/2343935