Is your music cutting out? Or are your players disappearing from the app?

What line in are you using. Your network weeks to be bogging down. Is there a way you can plug one Sonos unit into router for sonosnet to handle traffic.
I think I may have this resolved.
1.) The line-in is my ATLP120, a vinyl record player which physically connects to my Sonos Connect by way of red/white RCA cables.
2.) Unfortunately my router is about 40ft away from the the Sonos units. I tried changing multiple channels on the 2.4Ghz WiFi spectrum. Some worked better than others, but there disruption remained in playing audio to the Play 1 speakers. The Play Bar and the Sub never experienced any disruption in playing audio.
3.) I setup QoS rules on my router allowing Sonos devices higher priority. Could not really tell if this worked. Performance was about the same was varying the 2.4GhZ channels on WiFi.
4. I removed the Play1 as surround sound speakers and set both up as standalone "room" configs. Next I joined the new rooms with my old ones and eureka no streaming disruption since. So here's for hoping. I re-ran diags and the new code is 8306099.

You could wire one temporary to see if helps and allows you topair the play1s with playbar. If works get a cheap bridge to make the connection.

FWIW, I re-added the two Play1 as surround sound speakers because the stereo right/left was pleasing to the ear. Unfortunately this re-introduced the disruption issue on the Play1. So for now I will leave the setup as grouped standalone(s). Thanks for help.

Strange. It must have something to with them connecting them via the playbar.

Again. Go back to the paired as aurrounds but try hooking any unit to your router.

Latest configuration: back to paired surround setup with one Play1 physically cabled directly to the router. The remaining Play1, sub, and bar are wireless. During record play the audio only cut out one or twice, but it does still occur in this setup. Ran a diag. Code 8306212

Latest configuration: Same as above except now both Play1 are wireless. No disruptions. Looking at Sonos Application I see:
TV Room ( Playbar and Sub)
Living Room
Living Room 2 (mute stops all devices audio. Room Settings show "Stereo Pair" and "Separate Stereo Pair" options.
So it seems pairing while having one Play1 physically wired to the router and then moving the speaker back onto Wifi in its original location has worked? For now anyway 🙂 Thanks again for your help. Ran a diag under this setup. No disruptions 8306282

Music from any and every source cuts out constantly. Most of the time, it barely even plays one song before the music stops. I'm ready to smash thousands of dollars of equipment. Diagnostic number is 8312829

Again this sounds like IP address conflict.

Assign new static ip addresses to each or turn off all your network devices and reboot router to clear the offending device(s).

Thanks, but I have no idea how to assign new static ip addresses.

Each router manufacturer has a different method by which to do so, I'd recommend pulling out your router's manual, and looking for the information there.