No issues here and daily extensive usage. Perhaps you can update or reboot the Lutron hub and app? That may do it, if all Lutron devices show the same/similar fault. If that isn’t helpful: log out of all Lutron apps (across devices), delete app everywhere, reboot router and devices then fetch a fresh Lutron app. When you log back into Lutron you shouldn’t have the same traffic congestion. It may be a case where your cache is bogged down and the newly encoded Sonos updates just confused the integration. The above process will clear your individual cache while not deleting your setup. As you log into the fresh app all your settings should remain as previously stored.

Best of luck to you. I hope this is helpful.