It’s possible that it isn’t a Sonos issue. Have you rebooted your router, followed by rebooting your Sonos devices, to pick up any DNS changes that may have changed between your Sonos speakers and the Spotify server? Have you submitted a system diagnostic within 10 minutes of experiencing this problem, and called Sonos Support to discuss it, or are you just assigning the blame to Sonos?

In fact, if it isn’t happening with any other stream, how could it be Sonos?

Airgetlan, the response to that statement is that is MUST be Sonos as Spotify works flawlessly outside of Sonos, as do other music services I use. It is only when run within Sonos that it is a problem. And yes I have tried all of the above.

Perhaps you know more than I. I was under the impression that Spotify uses a different server to provide the Sonos stream, one that had the Sonos Music API on top of the normal Spotify data, and that they used another server for their own apps, including their own mobile and desktop apps. Much as most streamers do. 

Since Sonos uses the same ‘player’ software for all streaming content, I’d have thought all streams would have been affected, not just Spotify.

I certainly hope you’ve taken the step to submit actual data to Sonos in the form of a diagnostic, and called in so they know to reference it, since neither support nor the coders seem to read this community forum.

My apologies for wasting your time.