It seems to me that installing external audio drivers and changing Pulseaudio configurations is messing with the OS. Mint uses fairly old, stable packages. Newer distros have Pipewire for audio now. It’s a Pulseaudio replacement and might be useful in your case. Have you tried a newer distro? You can try Ubuntu 22.04 or Fedora from a USB stick to see if your audio equipment works out of the box. Then you won’t have to fiddle so much with the OS. Fedora Silverblue in particular is immutable and you can reset the OS to any current or previous state with one command, even without Timeshift. Another thing for testing software like DaVinci Resolve is Distrobox containers. You can change whatever you want inside a container and try different distros but you won’t break the underlying OS. Hacker’s dream.
It seems to me that installing external audio drivers and changing Pulseaudio configurations is messing with the OS. Mint uses fairly old, stable packages. Newer distros have Pipewire for audio now. It’s a Pulseaudio replacement and might be useful in your case. Have you tried a newer distro? You can try Ubuntu 22.04 or Fedora from a USB stick to see if your audio equipment works out of the box. Then you won’t have to fiddle so much with the OS. Fedora Silverblue in particular is immutable and you can reset the OS to any current or previous state with one command, even without Timeshift. Another thing for testing software like DaVinci Resolve is Distrobox containers. You can change whatever you want inside a container and try different distros but you won’t break the underlying OS. Hacker’s dream.