Cookin' some Ballistix on the bench.
Came up immediately, BIOS either had a DDR4-3600 XMP profile preconfigured or drew it correctly from the RAM. Turned it on in BIOS and all was joyous at 3602Mhz/4.2GHz-ish. None of the hair-pulling I had on my Aorus Pro MB. What a difference a few months makes in the maturity of a computer product's life cycle.
Now all that remains is to figure out how I'm going to mount the temp sensor for the case-mounted thermometer; which you can see there on top of the SSD box.
Don't worry... the unicorn blarff is going back to the store. It was a impulse purchase from Princess Auto's Surplus aisle; we discovered once it got home that you can't turn the rainbow to a single color, and even my 13-year-old son couldn't stand the idea of living with that shit.
mnem