I'm guessing your speakers are connected to your dots via 3.5mm cable? I know when playing multiroom audio it disconnects any speaker in that group that is using Bluetooth until multiroom audio playback is stopped. I'm guessing it's due to the lag introduced by Bluetooth, but it's pretty annoying. Also, the lack of ability to have a device in more than one group is bothersome, but hopefully they will get that fixed in the future. For now, I'm just happy to have the option, can't wait to see what other upgrades come in the future.