Hi malibio !
I'm really happy to see you made almost the same build
You need to know that I'm on Mojave for the moment. I will go on big sur when the golden build will be released. I hate Catalina ahah.
I will try to answer to your questions.
1. For the GPU, I have sometimes static, but it works. I don't have big issues with HDMI. Really odd...
2. Audio :
I put layout id = 7, because audio didn't work with id 1 and I saw another asus motherboard with the same chip (SupremeFX S1220A) using this layout and all works flawlessly since I made the modification.
I put under DevicesProperties > Add > PciRoot(0x0)/Pci(0x8,0x1)/Pci(0x0,0x4) and layout-id 7
But if your navi card works, it's cool
you can read the documentation on Apple ALC in GitHub if you want, you have several numbers and you can try one of them :
Native macOS HD audio for not officially supported codecs - acidanthera/AppleALC
github.com
3. You took the right decision for the Wifi/BT card
, keep it !
4. webcam : so cooooool ! and what about the microphone ? I don't use a webcam but I will take one in a near future.
5. Sidecar : unfortunately, I don't have a recent iPad to test this, and I don't now if sidecar works now, I thought no but maybe things changed
6. USB mapping, you can use my file, it's the generic one and all is working, maybe sleep doesn't work on catalina, but it will on big sur !
7. I uninstall the cpu management because I find it useless...
Powermanagement is a kext made by a developper of the community (trulyspanich) with a application for macOS, you need both of them to get the power management works, here's the link :
Power management, monitoring and VirtualSMC plugin for AMD processors - trulyspinach/SMCAMDProcessor
github.com
regards