And still I never heard of the problem any more since 1.186. And otherwise I maybe recall one occasion. Re: WIN8 stops
But there's also a report that it is related to the processor speed. Actually two, because in one occasion I suspected it myself. So Anthony, I am sure I ran into the thing daily when my speed was 720MHz or so. But since I run it at 430MHz never again. Back at the time I couln't make this consistent because it was always a bit waiting what would come out of the speed but since I know how to consistently do that ... maybe it is just that. So this is with the BIOS settings as described here : XXHighEnd PC BIOS Settings
with the notice that origins from January 17 (so earlier than that topic) and that "weeks" before that I rean with that 430MHz already (but didn't know how to deliberately do it but friggled until it did). So if you like you can set those literal BIOS settings and see.
Another quite interesting thing would be that 1.186(a) itself did not deal with the 16 cores properly. Btw not did the previous versions. However, now it does, so now it impacts the issue ? can well be. This is how Scheme 3-5 can work out differently because this scheme works with the "first" cores which are the same as with not Hyperthreaded. 1-2 works with one of these "physical" cores while the other one is the Hyperthreaded one.
And of course, you used the lot not-Hyperthreaded (with your Xeon) because it just would not work because of this 16 core omission in the software.
All IOW, quite some things changed and actually so many (including your own settings) that it can be anything and also the combination.
Anyway I never saw the problem again since say the end of 2013, and I think the same with others (while *everybody* was suffering from it).
Now what to make of this all ...