Four Sonos Ones, two Sonos Threes. One Connect and One Boost. The Three are a pair. One of the Threes is hardwired into the router, as is the Boost. The other Three and the Connect are eight feet from the router, unobstructed line of sight.
1300 square foot, single-level apartment. Drywall walls.
New (Sept 2022) router.
I cannot accept “network interference” as a reason why speakers drop and come back in sporadically.
Yes I have rebooted the router, and at least weekly I unplug and replyg every speaker (which involves moving bookcases, which is nice).
Diagnostic 233812001 and 964518148.