I'm experiencing frequent drop outs while listening to music. They are usually short (2-5 seconds). Music basically stops playing on all of the speakers in my living room at the same time, and restarts on all speakers together.
My setup is Playbar and Sub next to each other at the front of the living room, and two Sonos Ones at the back.
Playbar is wired to a Wifi router which also sits at the front of the room, around 4-5m away from Playbar and Sub.
There are also two Symfonisk lamps in the bedroom and Boost in between Living Room and Bedroom. None of the Sonos devices connect to my home Wifi, they are all on SonosNet, channel 11.
Speakers and the controllers have been updated to S2.
For this test I was playing music only in the Living Room. The "SONOS_IP_ADDRESS:1400/support/review" diagnostics page confirms that the Playbar uses channel 11 and also channel 48 to communicate with the Sub and Ones:
Mode: INFRA (sonosnet)
Operating on channel 2462
Home channel is 2462
HT Channel is 5240
I made sure to run my home Wifi network on different channels:
Channel 1 for 2.4Ghz
Channel 64 (80Mhz)
and an automatically selected channel in the upper band (currently Channel 100, also 80Mhz) for 5Ghz.
There is a few mobile phones, laptops and other devices in the room.
I've submitted Diagnostics (634910024) - does it show a direct cause of these drop outs? If there is an intereference - does it show which channel or which wifi network is interfering with Sonos?
Of course I may be wrong here, but I think we can exclude problems with the music being delivered to Playbar from a local media server - one day I've switched off router and it was still around 30-60s until the music stopped playing, so I assume Playbar is caching the songs in its memory. Also, similar dropouts occur when streaming music from an internet radio.