Sky Sports UHD sound problems

[NoPoliticsInSport]

Why is there a huge sound lag on channel 401? Every other channel is perfect, even yesterday when I went to channel 404 then accessed UHD through the red button that was perfect. Went back to 401 ( it was the same programme on two channels, as normal with Sky at the moment) and again the sound was completely out of sync.....come on Sky sort it out! You're charging me for a seperate UHD channel that is unusable.