Mm only thing i can think of is some issue in a kernel?
Try loading different kernel versions, including the newest as your hardware is relative new
Single or multiple passes?
I don’t remember ever seeing MCE error without some kind of hardware / bios problem 
Tried with fast boot disabled in bios?
@Intensiverock
What specific memory do you have installed? Have you tried lowering the speed of the memory? For instance if it is 3600Mhz try lowering it to 3200Mhz and see if the MCE error still happens.
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and secure boot disabled too … now as we know winows is installed…
Mm that might be a good guess!