Hi,
There seems to be lot of different issues floating around for build 9926, and thought I would give you my experience.
Ok I got my SP3 a few weeks ago, for this update I started with windows 8.1 which was factory reset before I did anything, in the process of resetting it installed all the windows 8.1 update, I then run the upgrade exe on MS web site, and sat back while it installed, After the win 10 install my only major issue was IE crashing with some web page, ones with video seem to be the main culprit, but not only, installing some old video drives seem to solve the IE crashing, another issue I am experiencing is the " Do you want to enter tablet mode? " popping up very often, sometime for no reason, other than that my system seem to run ok other than the odd glitch. I have no wake up from sleep problem