Problems with grouping rooms (single speaker goes silent, rooms out of sync) Hello all,Over the last weeks I started having problems with my Sonos system.I have 3 separate rooms defined:[a] Play:1 stereo pair [b] Play:1 stereo pair [c] Play:3 stereo pair + Sub + PlaybarEvery room by itself seems to work fine. But when I start to group rooms, for example [a] + [b], two problems occur:One of the speakers in one of the pairs goes mute/silent (this one is pretty consistent). When I ungroup, it goes back to work perfectly fine in stereo with the other speaker in the pair. The rooms go out of sync between each other by fraction of a second (this one seems random for now, or it goes out of sync in time).All components are fully updated, all components are on S2. I have a very stable and fast network connection and each speaker is not further than 7m away from the wifi router. I haven’t seen any such problems at any time in my 8+ years with Sonos…Any ideas? Is it a known issue(s)?BTW, is there any kind of “factory reset” for Sonos units, especially the ones I own?Thank
