Yes I'm seeing entropy take over the device. The latest firmware upgrade said it failed but I thought it installed. My mouse freezes still, and it does feel more sluggish. It is unfortunate since this is an all Microsoft device for some reason I expected better and thought that MS would have wanted to take pride in a flawless user experience. I guess the lesson here is the Surface Pro is just another PC and it is still running Windows and all its bugs and baggage.
Feels like memory leak. I'm running 30% of available ram doing absolutely nothing. That seems high I guess.
Advanced System Care 6 has a free memory cleaner that seems to work well. Things get sluggish and I just run a quick memory wipe. Seems to help.