We have a Sonos connect wired to our router and a Sonos one in our bedroom.
The system mostly works but randomly (after working fine for a few days) starts cutting off ( we stream Spotify or a radio station) . Changing the Sonos channel fixes the issue most of the time, but sometimes not. That's when I power cycle the Sonos receiver. This fixes the issue.
The error message I get from my Sonos app when music is cut off is something like “not enough bandwidth to play music” . Streaming music requires between 160kpbs to a 2mpbs for the most demanding. I have 40 Mbps at home and our Sonos connect is wired to our router.
This is very frustrating as it has been going on since day 1 (almost a year now) and Sonos tech support has been a waste of time so far.