Ok so update of sorts:
- Fixed my boot issue, it was the hard drive, bought another hard drive, install went smooth.
- I flashed my Titan Ridge and it KIND of works..... well not Thunderbolt- just USB-C ... USB-C devices run at full speed from the it, but Thunderbolt 3 isn't working at all. System Report states: Thunderbolt: No drivers are loaded. When I connect my Caldigit, the light comes on but no devices work (not surprised). About to re-consult the kgp guide and re-read about TB3.
- Even though I'm using a Sapphire Nitro Vega 64, do I need WhateverGreen.kext? For some reason my display is suddenly only running at 30hz (it was running at 60hz before I changed my boot drive).
Next step is to boot ubuntu and pray I flash this network card correctly.
I've had some issue with Final Cut X (if I cmd + tab while exporting it crashes sometimes)- and when I close a project, a frame from the project remains. If I do quick cuts in my project, sometime the frame gets corrupted on the export, so I've had to be mindful of that.
Also, I notice that the h264 exports aren't much faster than my 2017 Macbook Pro (not a big deal, it was ProRes I wanted acceleration from which I'm getting lots of with the current 10 core).