Your Hack meets the recommended requirements, i.e i9 plus dGPU with 8GB VRAM (assuming your RX 580 is an 8GB card). So whoever you were talking to at BlackMagic was telling you rubbish, probably because you told them that you used a Hack instead of a Mac.
I know! I was so angry at that comment when they emailed me. Problem is, to crash report to them you have to send them an spx file, so they must have been able to deduce from that I had a Hack.
Yes, I did know that about the drivers being updated within macOS updates, but I wondered if there were any that were maybe "bad" and rolling back in some way might be a solution, or maybe I'm not up to date enough.
Yes, my system is for sure compatible. 8GB card as well.
Question now is how do you have the Graphics in your system setup?
Within Resolve? or on my machine? I have it setup within Resolve as the BMD team recommended before they discovered my dirty little secret.
They DID say, before they stopped helping me, that it could be an incompatible GPU driver which is the reason I'm going down this path of investigation.
Assuming you have your UHD 630 running with a Headless framebuffer on an iMac SMBIOS (iMac19,1), with your AMD RX 580 set as the default graphics card
System def is iMac19.1. But the other stuff I am less familiar with. It all rings a bell, but it was about a year ago I set this machine up and I'm just not proficient enough in this game. My config.plist is attached.
Should I update Lilu and WhatEverGreen kexts? And if I'm thinking of updating to Big Sur, should I just do it anyways?