I am using a MacBook Pro logging into BT Sport with Ethernet connection.
Good Broadband speed and Settings in safari are as advised.
If watching BT Sport live i have no problem but when i try to watch Full Race Replay in Moto GP or European Champianship Rugby the problems start.
First of all the sound will break up followed by the picture becoming jerky. This happens on and off for a while and then about halfway through the video replay ( 20 to 30 mins) the picture wili start to buffer and then freeze with the buffering circle going round and round.
It will play ok on short videos and this problem has only started since the weekend.
I'm sorry you're having problems with the picture and sound quality. You've mentioned the issue is watching the replay. Are you seeing any error messages? Does the problem happen on all devices? Can you give us as much detail as possible on the problem and we'll try to help.