MikeB4: Are you guys using Professional or Home? I am using Pro
I'm using both.
The problem on 8.1 Pro was it seemed to be related to turning on from sleep or hibernation. It would sometimes jump almost direct into a restart without warning and I would lose any work in Microsoft Office. That was real annoying if I'd turned the system on just to do something in a hurry because I then had no chance of getting anything done. It's not such an annoyance for me now because I run two laptops with synced data.
On 10 Home it might have been a similar issue but Windows tended to update and restart when I wasn't actually working on the laptop. But nor was it at the time it was scheduled to update.
On 10 Pro I don't remember having any problem.