There was an existing thread for this open issue but I cannot add to because its been closed as “answered” (??) - found here:
The good news is that the developers of Airfoil reached out to me to inform me that the latest Sonos update has finally fixed the issue. I updated by Move2 via the iPhone Sonos app to 84.00.34 and tested the Move2 from Airfoil - Im happy to report it is now working and stable for me.
So looks like as suspected, it was a Sonos software issue all along.
https://support.sonos.com/en/article/release-notes-sonos-app-updates
