As I move my mouse around the screen it will briefly get stuck at random points then start moving again. This doesn't happen on the MacBook Pro trackpad...only when I have a Magic Mouse connected. This also happens most often on the left 1/4 of the screen when coming from the right side of the screen or trying to transition from the lower to upper half of the screen.
This started happening right after
Security Update 2018-002 for Sierra 10.12.6.
Restarting hasn't fixed it.
My cursor size in
Accessibility > Display is normal.