I've turned that off, but the issue persists. My McAfee real-time scanner was consuming 30% CPU (yet another new, I think unrelated, issue I have to resolve). What I don't know is, is this a mouse pointer issue or an actual busy process issue. It only appeared after I did a restore from a restore point that was just days old (which I created before trying to resolve a different, unrelated issue).
I had been using Win10 without this issue for months.
The 'busy' blue circle mouse pointer is constantly on. I have Win10 on a Toshiba Satellite laptop.