This has been happening for some time now, programs start by playing back fine and then start to freeze and stutter and pixelate. I have spoken to the support team twice, they do their checks and tell me everything is fine. A few days later I watch a recorded show and the picture breaks up again.
Have done all the usual stuff. Power down box, remove card, reboot and so on. Just frustrated that support guys do not seem to accept their is a problem.