This is really frustrating and I think has only been an issue since we upgraded to the new S2 app and removed the Bridge. We have a Netgear Orbi Mesh WiFi set up a Playbar, Play 1 and Play 3 across the flat.
Have tried the following:
reset all Sonos speakers
removed and added the Spotify app
changed the router channel from auto to 1, then 6 then 11
Playing from the Spotify app to Sonos is also patchy
All other services on the Sonos app work perfectly.
Is this a common problem?