I have a samsung Ht-H4500R Home Cinemas system which i bought last month. I initially had a few issues with 5.1 sound from the sky box which I posted about on here and got some help which resolved the problem. However something I have noticed is when I play a blu ray or dvd the sound is very slightly out of synch. The built in netflix and BBC I player and the sky box and Apple Tv I have connected to it are fine. Its when I play a disc. I actually have to go to settings and alter it to 25ms. Then of course I have to alter it back again when I have finished playing the disc. Does this seem right? I have never encountered this before. Its so annoying to have to do this everytime I play a dvd or blu ray. I have the ARC setting off and am using BD Wise. Any ideas? Is it something in the settings I need to change?