[PhilyG]

I suspect some of my issues might be that I'm using a 3rd party Radeon 5700XT in my rig and it probably needs a firmware update, which I might try to do via the Bootcamp partition on my Mac Pro. Apple sold this exact card as an upgrade for 3x the price just built into their fancy "MPX Module" so I just bought an aftermarket Sapphire card that worked fine up until Catalina.

I also might try putting in the stock card that came with my Mac Pro but I doubt this is a Radeon issue because the cards that ship with the Mac Pro's are Radeons.

Also, I think I'm going to try Monterey as several people here and other engineers outside of this thread have said they're rocking on Monterey with PT so maybe that will help. Just gotta be sure my Time Machine is backed up before I do it so I can roll back if need be....