I am seeing frequent hangs of varying times after reboot. Many times a few minutes after boot, often 15 minutes after boot, once as long as 5 hours till requested shutdown. Typically most activity freezes things, the mouse might still work but wont respond to a click, sometime screen goes blank, sometimes reboots. On one occasion that I caught " .net optimization service" was compute bound on 1 core showing 100% total disk activity, but no process had any disk activity.
Hopefully the .zip file attachment is correct, I was a bit confused by the instructions.