@Simone5
I've moved your post to the TV section of the board, it was buried in the chatter forum..
Can you be a bit more specific about your picture - is this on any specific channels? SD or HD? Are you watching on an HD TV or a 4K UHD TV?
What're your video output settings (Home > Help & Settings > Settings > Video)?
If you can help with a few bits of info, we can probably give some more pointers.
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