My sub will regularly go out of sync with my arc - especially when skipping through songs on spotify. Sometimes the sub will stop playing for a few seconds and then come back online but out of sync.
I have my arc connected to my router via ethernet. I have my WiFi router and SonosNet on different Wi-Fi channels. The arc is maybe 10 feet away from the sub. I’ve never had an issue with my ones either that are 20 feet away. It’s just the sub that seems to be the issue.
I submitted a diagnostic report: 475378171.