Still having the same issue. All of the sudden the audio gets lower, there’s a static noise in the background and occasionally a loud screeching. You can turn the volume up and down, change the app but nothing besides turning the TV off and back on seems works.
Brand new HDMI cable plugged into ARC. I’ve checked the connection there on both ends. Modem extender is within 10’ of the device so I don’t think it’s signal.
Serial Number: 2A1296437754