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I have noticed that when watching a Freeview channel, after a while (60 or 90 mins approx) it starts dropping frames. It's like it drops to 5 FPS for a second or less, then goes back to normal for a few seconds then drops again.
There is no picture or sound breakup like I would expect with a signal issue. If I rewind and watch the recording of the same footage it is perfectly smooth.
Switching the channel and then back again to resolves the issue until it eventually reoccurs.
Is this something to do with a problem buffering the recording of the live TV to the HDD?