Thanks for getting back to me @Paolo_Limoncelli and taking the time to answer my questions. very appreciated!
Moving forward, I see that you are making use of Netgear Powerline adapters to reach your endpoints. The reason I am bringing this up is because we have seen some issues with these class of device in the past (example #1, example #2, example #3, example #4) and I am wondering if you could possible be feeling the same affects as seen in the examples mentioned previously.
As a very quick test, would you be able to mount the Sonos Play1 directly to your router? I am curious how the unit behaves when removed from the powerline adaptor.
Looking forward to your feedback!
-Eric