When you watch an On demand or catch up programme, your YouView box downloads some of the programme in advance so that it plays smoothly. This can sometimes cause a delay which is known as "buffering". You'll see a spinning icon in the centre of the screen when a channel is buffering.
We've optimised your line to bring you the best and most consistent TV and broadband performance. It is normal to experience some buffering at the start of a programme, but if it happens midway through then try the simple steps below. It's a good idea to check whether the problem is resolved after each step.