Hi, it can be any channel, recorded, live, streamed, watching a film. It just drops sound for a second then picks it back up. Sometimes the picture pauses too.
i have the v6 box connect to tv hdmi and I have a sound bar through hdmi arc. I have the sound bar & 2 speakers, grouped to give 5.1 (connected wireless), they are all Samsung, tv 9months old. It does it even if we just set sound to tv arc.
Had both downstairs and upstairs boxes replaced, On upstairs one, if watching a recording it sometimes freezes and then tells me network to slow, had different errors each time. Often getting kicked off WiFi on phone, tablet, drops WiFi for sound bar and speakers. Have now stopped the smart channel select as advised by one engineer, hopefully that helps. We have a booster upstairs, one of the old ones from virgin as it’s really poor WiFi when away from router in living room.