This is a topic which seems to have been exhaustively explored on this forum, but here I am experiencing it too.
I have 8 Sonos speakers throughout my house. While streaming music on Spotify, at the beginning of a new track, one or more (much more often more than one) speakers will drop out, only to rejoin the network again 20-30 seconds later. It is HIGHLY annoying and has been going on for some time. It happens constantly, every single day.
I have tried just about everything. I’ve changed the wifi channel for Sonos. I changed my router’s wifi network channel. I completely disabled the 2.4 GHZ network on my router, so nothing is competing with Sonos in my home. I’ve used NetSpot to determine that there is very little wireless interference from neighbors on any of the available channels. I have assigned a static IP to every Sonos device on my router.
Any hope for me? I’ve submitted diagnostics; the number is 755719473.