Confirming NVRAM Reset

Since the first thread I linked above is locked, I thought I'd just mention here that while resetting the NVRAM MAY have helped, what seems to have solved the problem for me is unplugging the USB3 hub from my Mac mini 2018. Even though it has the ability to 'turn off' all of it's ports, when it's attached to the USB-A3 port on my mini, the mouse stutters. Devices plugged into the USB-C ports don't seem to cause any problems. If need be maybe I'll look at USB-C attached Hubs, but for now I can get by without the extra ports.

Thanks though for the education on viewing the contents of the NVRAM, I am comfortable with the CLI.

It’s actually been a good 3.0 hub and well rated, certainly not cheap. I never had trouble with my 2012 mini, though I got the hub not long after that so it could be failing. No mater, problem solved and don’t really need it.

Thought I'd finish off this thread with one more piece of info, as I mentioned above, removing the USB 3.0 hub from the Mac mini 2018 solved the staggering mouse problem. I thought though I'd try one more thing, I bought a USB 3.0 C to A cable and hooked the hub back up to the mini using one of the (4) USB-C ports -- previously it had been on one of the (2) USB-A. The mouse staggering has not returned.

Granted, this is not a definitive experiment, but it appears the USB-C ports on the mini are serviced more efficiently. Eventually I'll probably look for a USB-C connected hub with both C and A ports, but for now I have some extra A ports when I need them.