Looks like I won't be getting rid of RED Glare for (possibly) a while yet.
There was an unbelievable high today after I reconnected everything and the beast booted and I was able to get into the BIOS. That high was lowered in steps as I found I wasn't able to get my RAM to go above the 2133 default at all no matter the timings and/or voltages I tried. Decided to try installing Win10 at the default settings. Got through it okay, then tried copying the installers for the drivers and initial programs I wanted to install from a USB drive onto the 4TB data drive. Froze up about a minute into that copy operation. Rebooted fine, then decided to try to install all the Windows updates waiting. Got a CLOCK_WATCHDOG_TIMEOUT BSOD a couple of minutes into that. Rebooted again. Froze up again just idling in Windows. Shut it down, took a break. Came back and it now gets an "8" POST code immediately upon power-on. Even tried it without any RAM and it still gives the "8" code.
Could be a bad CPU or board. Probably going to head to MicroCenter tomorrow to do an exchange. They still have plenty of Ryzen CPUs in stock. I checked the board situation, and it looks like they have a single MSI X370 Titanium and a whole bunch of ASUS X370 Prime boards in stock. No Crosshairs of course. Might have to switch boards. We'll see.