Terrible mouse in my experience. I love SteelSeries peripherals. I was a big fan before I had a long vacation 2011 - Present. But it just so happens I had 4 of these mice pass through my hands recently. Upon testing 3/4 would randomly fail, I couldn't work out what had been happening suddenly the cursor would start jumping across the screen, I checked all other mice I had just to be sure.
First port of call was a driver issue, nope, drivers were not the issue here. So then I wondered am I just being stupid ? Have I just got a dirty mousepad or got some crap in the mouse itself? So everything got cleaned and several different surfaces got tested to no avail.
So out comes the scewdriver.
Anywhoo, turns out soldering wasn't really complete on the 3 I took apart, I mean, it just required a heat gun to be applied to the board and voila! All 3 worked fine. 2 have now gone in the bin, 1 was passed on and the other is on a shelf because I find it less comfortable than a cheap Trust mouse I have.
At the end of it all I hope I was just really unfortunate. I do like SteelSeries products, they were always my go to.