Thanks for the note here. A few questions to help better understand what you are seeing:
- What channel are you watching when you observe this? Does this occur on multiple channels, or just one? - Have you tried troubleshooting your network? Restarting your modem/router, and your device may help. - Have you tried removing the channel, restarting the TV from the Settings menu, then once the TV starts up again, adding the channel back once more?
With more information, we can continue assisting you.