Hi, I have the same problem with recordings on my V6 box freezing on playback - have tried rebooting, disconnecting and reconnecting cables etc. with no success.
Called 150 on New Year's Day and the technician told me to clear the suggestions and that hopefully this would help - sadly it didn't.
I am pretty sure it's a hard drive issue as no problem with streaming, navigating, internet connection etc. but he said from what he could see the hard drive is fine. He said he couldn't book an engineer unless the system told him to so not keen to try 150 again as it usually takes ages to get through.
You've not mentioned issues with live TV, so I presume you don't have any - try pausing a live channel for a short time and then resume watching in delayed mode. This is effectively a recording and uses your hard drive in exactly the same way.
If you do have hard drive issues, then paused and delayed TV will be affected too.
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