I tested this by switching the compression setting in the Sonos app from "Uncompressed" to "Compressed". The drop out went away but the audio quality was disappointing compared to the previous "Uncompressed" quality setting.
My question is this, will removing some of the Sonos speakers from the Group using the Line In as a source help reduce the bandwidth demands which is causing the audio drop out or does the number / type of speakers in the Group make no difference on bandwidth demands?
My Sonos System as whole looks like this:
Room 1 - Sonos One
Room 2 - Sonos One
Room 3 - Play 1
Room 4 - Play 1
Room 5 - Play 3
Room 6 - Play 3
Room 7 - Stereo Pair, 2 Play 1
Connect - Stereo Pair, JBL Studio Monitors + JBL Sub Woofer
Diagnostic info sent, confirmation #1714925635.
Best answer by Keith N
Additionally, it would be ideal to plug the Connect into the network using an Ethernet cable. This will bring the source of the signal as close to the network to reduce the impact of interference.
Also, you may want to think about grouping from the Connect to the other rooms to ensure that the source of the signal is responsible for feeding the rest of the group, instead of needlessly bouncing the signal around the wireless environment.
Let me know how this works out for you.