Final report, I think.
On my SP4 I had one and only one driver crash, or any crash at all for that matter, and that was on the first day while I was setting it up, October 28th. I just set up another SP4 and again had one video driver crash, in the first 10 minutes. I have now install quite a few apps, including Office 365 and the crash happened at 3:45 It's now 10:00 and I have been using the new one nearly constantly for over 6 hours with zero additional problems or crashes. The one and only thing that was a concern, (for 2 seconds), was a stall, but it was not hung up, just 1 hesitation. I have not used Edge and I have not installed any helper apps, like Shockwave or Adobe Air for instance. All is as up to date as it can get. I have used desktop IE.