We would like to know how to identify and resolve any playback issues. I have a few questions to better understand the behavior you are seeing:
When did this issue first start occurring?
Do you observe this behavior while using any other channel(s) on your device?
Have you tried removing the channel, restarting your device from Settings>System>Power>System restart (If you do not see a Power submenu, skip to the next step), then once it loads up again, adding the channel back once more to see if that clears things up?
What troubleshooting steps have you taken so far to resolve the issue?