I recently purchased the Sonos Beam and connected it to my Insignia NS-48d510na15 via Optical input and have had issues with the audio cutting out often throughout the course of a one hour show. I tried connecting via the HDMI-ARC as well and am still having issues with the audio cutting out. In addition I have noticed the sound volume getting louder and quieter while switching shows from time to time (this is the least of my worries right now, but thought would try and document all the current issues). I recently tried playing music through the speakers via airplay and Sonos app and do not notice the sound cutting out, but its harder to tell with music than while watching a show. Lastly, I have tried cleaning the optical cable on the connector side, but not the TV side, I plan on trying that next week when i get the proper tools. Is there any other reasons I may be having issues? Please help. Thank you!