When I play a Bluray from my PS3 slim I have to set an av sync delay. It runs through an Onkyo 608 to my TV and projector. This isn't a problem in itself but when I play a PS3 game there isn't a delay so I have to reset the sync each time. My question is what setting have i switched on that means I have to delay the audio? I think it must be a PS3 setting as the Onkyo doesn't know whats coming through it. There is also no delay in watching files on my PC. Any help would be much appreciated. Thank you.