Hi
I also have the same problem (jerky/looping playback on catchup) running the latest beta software
firmware version v1.4.45
IPTV version v7.5.5
System : Formuler Z8
The fault is consistent and reproducible in that I can be on a live channel and then play a catch up program, which then displays the faulty behaviour. Switching to a live channel that is not working with a black screen and then going back into guide to play the same catchup program, it plays fine and works around the issue. It is sometimes difficult for me to find a live channel to switch to that is not working, and therefore is not ideal.
I can try and record a video and log a support ticket but not sure if I’ll have time this week as I’m away from this afternoon, but this seems to be an issue affecting a few people on here I’m guessing on different providers etc.