Thanks for the reply! Your own forums may be a great place to start. There are some open issues for this, some you have seen and some unanswered

https://community.frame.work/t/audio-issues-windows-11/11726

https://community.frame.work/t/windows-no-audio-output-devic...

https://community.frame.work/t/windows-11-audio-no-longer-wo...