Channel 5 are hopeless at sticking to the schedule and afaik the extra channels don’t yet support Accurate Recording.
I use a manual timer for the few Channel 5 programmes I record.
Autopadding – applies to all recordings. It adjusts the start and end times from the scheduled times. It’s advantage is that series recording is retained, disadvantage if the programme overruns by more than your end padding the good broadcasters using AR can’t extend the recording time automatically
Settings Recording Start padding time, End padding time.
Manual recording
Recordings Planned Right Right