Here's a really dumb suggestion. I'm not being sarcastic either, I've had this happen to me. Try a different mouse pad. Sometimes the mouse laser seems to deform the pattern (if you are using a mouse pad with a pattern) or if you aren't using a mouse pad, try a different one. The other thing would be to check mouse drivers. Odds are you're running the manufacturer drivers and Windows 8 mouse drivers. Try rolling back (or reinstalling) each driver. Windows 8 could have had a driver update that's affecting it. It's possible that the Microsoft Mouse and Keyboard drivers might be different for that specific model mouse (though unlikely). Also try different USB port. :) Oh I've had my mouse deform laminate on a desk (using no mouse pad).

Edited to add I so want to make a Danger Mouse or Might Mouse joke here...

The dust settled, thinking "what a fine home, at least for now" not realizing that doom would soon be coming in the form of a vacuum cleaner.