1. Reason was that I needed to upgrade to Big Sur where the card no longer seem to work as before. And also I was really curious and eager to flash something. Messing with the hardware it self made me feel good inside
2. I upgraded two weeks ago. Actually I still have the Catalina on a separate drive and did a clean Big Sur install.
3. Yes, MOTU Needed new drivers. (Also tried to install old ones but the install complained about not being secure by apple or something.)
4. Sorry about that. Attaching a new one.
5. Three of them. - 828 ES, 16A and the AVB Switch.
6. AAAH! I found your guide after searching for AppleVTD:
https://www.tonymacx86.com/threads/...10400-amd-rx-580.298642/page-661#post-2262127
I will read it, and try it right now.
Thanks for all your knowledge and help.
EDIT: SUCCESS!!! I have no Idea what DMAR-fix did but it sure seem to work now THANK YOU. If you have any info on why this helped and what I actually did with your Guide, it would be very helpful. I'm so thankful CaseySJ