This is due to problems in the microcode 0xC2 for CPU Skylake. a bug occurs on certain configurations and versions of the operating system... To solve the problem you need to roll back the bios to the previous versions, for example ver.1009 I personally have repeatedly faced this problem, on motherboards from different brands. But at the moment with Win10 RS4 the problem does not manifest itself. to the end it is not clear what is the cause of the conflict...
If not running the culpable microcode, memory instability can also be to blame. Revert to stock settings and disable XMP if this is the case, and retest.
