I have the same problem since Monterrey! MacBook Pro early 2015. Multiple devices became incompatible and I have connectivity issues.
My headphones from anker sound core life q30 stopped working with my Mac do the the update they became incompatible. (Don't know how it's possible with bluetooth). Also my UE boom 2 speakers also are incompatible... Whilst my Xiaomi bluetooth speakers still works. Super strange!
The bluetooth issues show up while in teams or zoom. When I switch between full screens and I do something heavier then just zoom. The bluetooth stutters and suddenly the headphones become quiet no Sound and mic. I have to turn bluetooth on and off in settings for it to work again.
Happens with my airdpods 2nd gen and AirPods Pro.
Restting bluetooth by deleting plists and command center actions didn't work yet. SMC reset neither.
so turning off the airplay receiver seems to help for newer MacBooks
https://www.reddit.com/r/MacOSBeta/comments/qjgqjx/i_think_ive_found_a_fix_for_the_bluetooth/
or forcing apt x
https://discussions.apple.com/thread/253695375
updated today to 12.4 on my 2015 pro and still no fix… are we the only ones?!