Ever since the latest update, my pen will randomly lose pressure sensitivity and a big blotch will appear in a brush stroke (or eraser). I'm up to date on Windows 10, using a Surface Pro with good batteries in the pen and everything. The problem only occured after installing the latest Ps update.
Note: I have already spoken to a bunch of Adobe chat support people, and they can't figure it out (although they don't seem particularly skilled enough to fix it, either...)