There is a one youtubers review about Radeon7's performance depend on SMBIOS
According to him for Radeon7 iMac Pro 1.1 SMBIOS show better performance than iMac18.3 & 19.1 SMBIOS.
For Adobe apps if you make Radeon7 as AMD Radeon7 you can see apps use Radeon7 as a prior GPU
Because Adobe CC...
I've upgrade GPU from Saphire RX580 4G to PowerColor Vega 56 Red-Devil Edition successfully
1st problem was I couldnt see the booting BIOS screen and it was solved by setting up CSM enable.
2nd Problem was Fan speed and it is solved by VGTAB same as your guide.
Now My upgraded system work...
There is a hackintosh community in Korea I joined. https://x86.co.kr/tip/3276756
Many members in that Have difficulties to read your guide because of language problem.
Can I translate and post your guide to Korean for that community ?
My system is very stable already so.......no need to change something :)
and the "new" fake id 0x3E9B8086is not looks "headless mode" id. that means not match with my need.
If you have plan to remove your dGPU and use iGPU only You should consider that id I think
Don't worry everythings will work well soon :)
I checked up your EFI and I touched just a little on your config.plist
And more Please check up Your Bios virsion and setting one by one carefully. Mine is F6a.
Please find attached file.
I've changed my my monitor connection HDMI to DP and screen looks better, clean and clear. Maybe Placebo effect. lol
It was good investment for me.
Actually I start to feel boring because nothing to touch anymore on my system. So I start to consider to change my GPU to Vega 56 or 64 because...
That’s the best way I THINK.
IN MANY CASES we make a mistake to setup in small things and we cannot recognize. From bios set up plz clean install step by step carefully.
I wish you can have smooth and shining machin in this weekend
P.S. I did clean setup recently because sleep...
Hmmmm Your case is not usuall.......
Usually iGPU set up is well made there is no problem like yours.
Please follow Lilu giude https://www.tonymacx86.com/threads/an-idiots-guide-to-lilu-and-its-plug-ins.260063/
Specially DRM section.