I experience intermittent audio dropouts with the Playbar on Dolby Digital 5.1 broadcasts. I do also have the Sub and two Play 1 speakers setup as surrounds. I have an LG 55LA7400 connected via an optical cable to the Playbar. The dropouts occur sporadically and last 1-2 seconds. You can watch a TV show for a 30 minutes or more with no dropouts and then randomly hear a few at random times for the rest of the show. Now, when I check the Sonos app using my iPad, iPhone, laptop etc., it does say that it's receiving DD 5.1 audio. Also, if I change the audio to stereo then I don't have this issue. I really love the TV and the soundbar so I'd like to get this resolved if possible.