This might not be helpful to you specifically, but does this apply only to this game? If you have a wireless mouse, you can try checking your battery! That's just something that's happened to me repeatedly as the battery runs lower. I don't notice it outside of games, usually.
Also you can check your mouse pad's tracking accuracy by testing on a click test website and see if you might be having trouble tracking, accurate motions. It could also be what you have your mouse on top of. Again, sorry if that doesn't help at all, just a couple thoughts :)