Mac Mini mouse icon stutters and sometimes unresponsive The mouse icon on my Mac Mini (macmini6,2 - 10.14.1) has started stuttering. It's not always, but most often. Sometimes it's so bad the icon won't move at all and I cannot click with my Magic Trackpad 2.

I've looked at Activity Monitor (and top) but it doesn't show that it is doing much at all. I've closed down the more intensive background apps (e.g. Plex) but it doesn't seem to help.

A restart seems to improve things initially, but then it comes back.

I also occasionally see a grey box with a spinning sun like icon in it appear every so often. No idea what that is!

Looking for some guidance to locate the offending process, or if it is hardware etc.

I'm going to update macOS and see how that goes!
I can imagine two possibilities.


Someone cleaned the trackpad with a detergent that created a charge on the surface of the trackpad, which is disrupting the capacitive touch mechanism.
If the trackpad is connected via Bluetooth, you have a microwave source near you that is disrupting the signal e.g. a leaky microwave oven in a break room.