Here is an EFI for an Asus ROG Strix X570-E Gaming Motherbord with A RX580 GPU running Big Sur.
This EFI was implemented using OpenCore 0.6.4 excellent documentation.
https://dortania.github.io/OpenCore-Install-Guide/
Additionally there is some code to fix Adobe CS 2021 running on a Ryzentosh
https://github.com/megatronlabs/RyzenTosh/blob/main/AdobeFix/AdobeFix.md
OBS Virtual Camera was not working in various applications (Teams, Chime). It has to do with a code siging issue.
020-12-18 11:18:35.473 Amazon Chime[2761:155841] Error loading /Library/CoreMediaIO/Plug-Ins/DAL/obs-mac-virtualcam.plugin/Contents/MacOS/obs-mac-virtualcam: dlopen(/Library/CoreMediaIO/Plug-Ins/DAL/obs-mac-virtualcam.plugin/Contents/MacOS/obs-mac-virtualcam, 262): no suitable image found. Did find:
/Library/CoreMediaIO/Plug-Ins/DAL/obs-mac-virtualcam.plugin/Contents/MacOS/obs-mac-virtualcam: code signature in (/Library/CoreMediaIO/Plug-Ins/DAL/obs-mac-virtualcam.plugin/Contents/MacOS/obs-mac-virtualcam) not valid for use in process using Library Validation: mapping process and mapped file (non-platform) have different Team IDs
/Library/CoreMediaIO/Plug-Ins/DAL/obs-mac-virtualcam.plugin/Contents/MacOS/obs-mac-virtualcam: stat() failed with errno=3
Using this thead, i resolved it: https://github.com/johnboiles/obs-mac-virtualcam/wiki/Compatibility#apps-dont-allow-dal-plugins
Amazon Chime
sudo codesign -f -s - /Applications/Amazon\ Chime.app
Microsoft Teams
sudo codesign --remove-signature /Applications/Microsoft\ Teams.app/Contents/Frameworks/Microsoft\ Teams\ Helper.app
sudo codesign --remove-signature /Applications/Microsoft\ Teams.app/Contents/Frameworks/Microsoft\ Teams\ Helper\ \(Plugin\).app