Misterious problem with MS 5000 "Blue Track" desktop mouse!

We don't seem to have a peripheral category, so here I am! I've built a desktop with an Asus P8Z77-M Pro mother board, a Core i5 3570K CPU and a SSD. I use an Asus VE 228h LED monitor. After a week or so with the dongle in any given port, the cursor becomes erratic and eventually it will actually freeze. Sometimes a change of ports rectifies it, other times only a reboot. Definitely not the batteries or drivers. Well I guess you can't always say definitely not the drivers. Any theories? Thank you!

 

Bluetooth driver

or

Defective mouse/dongle

 

Or a can of compressed dusting gas. A hair or speck of dust may be covering the lens or in the way of the light.

Also, the mousing surface (destop) may be a factor. Not all surfaces are good.

I actually have the same mouse and besides the occasional dog hair in need of being blasted out, I just change the batteries about every 8 months. I like the mouse, but it does not work equally well on all surfaces. No mouse does.