Hi - hmm. I'm pretty sure this is specific to something going on on your computer. Do you have any non-standard OS mouse settings? Say, mouse trails, or click-to-run (instead of double click), or anything of that sort? Barring that, I'd look at whatever other software you might have running, and try turning it off temporarily.
Also, rebooting and running the game as administrator is worth a shot. Also, running the game in compatibility mode for Windows 95 / XP / 7 - not because it's *necessary* normally, but just because it might change something about how your system is handling it and get around the issue.
(FWIW, I'm running the game on windows 10 right now, and not having the same problem. So it's definitely not a general issue. The question is, what's causing it in your case?)