So i have a 2012 5.1 Macpro with an AMD RX 580 8gb Graphics card, i built 3 ssd boot drives that have been successfully booting OS Monterey for a couple of months, the day after loggin in to one of these drives i discover the boot is frozen right at the beginning of the load screen with the Apple logo , i tried booting from the other Monterey installs with the same result. after trying a repatch with the Opencore app from a Catalina install and also removing all drives except 1, I have had no success diagnosing the issue, as I said I am able to boot Catalina but nothing beyond, when trying to create a Monterey boot drive from scratch with my opencore Monterey install, the install progress gets hung up in a loop. The ONLY change i believe i made a few days before the problem was upgrading my 27 inch Dell monitor to a Gygabyte 32 inch Gaming monitor, but it doesnt change anything reverting back to the Dell monitor . Could this be a defective graphics card? or can anyone offer a fix, thankyou in advance.