First, thanks quietman7 for the try and to KingdomSeeker for the compliment.
So, I think I figured out the answer, kinda, maybe, but I'm still confused about what it means, exactly? And I don't know how to FIX IT.
It looks like the error is caused by USB 3.0. Both the Logitech M705 and the Logitech Performance MX are wireless, and use a little wireless USB dongle that you plug into the computer.
Previously, I'd been having the error when I plugged the dongle into my new computer's numerous USB 3.0 ports. When plugged into a regular 2.0 port, however, it ran fine.
But it looks like even using USB 3.0 at all causes some sort of interference? I had my cell phone plugged into the USB 3.0 port, syncing some music, and the mouse WENT CRAZY, like it was trying to climb through mud.
I think the interference is somehow signal-based, because even though the USB 2.0 port I'm using for the dongle is on the back of the computer, and the USB 3.0 port I'm using for the cell phone is on the front, the error started when I activated the USB 3.0 option on my phone. Or perhaps it is just use-based?
Either way, this is unacceptable. I can't be afraid to use a USB 3.0 port just because it'll make my mouse stupid.
What do ya'll suggest?