Hi! New poster here but regular stalker on these forums..
I've had my 809 since last fall and in the beginning everything was great from all my sources. However, I've recently noticed severe lip sync problems while playing video files from both my Boxee Box and a Dune D1 connected via HDMI. I haven't really changed any settings on my Onkyo, its set to Through on all video settings with Lip Sync on.
The strange thing is that the audio delay differs from video to video. If I adjust the AV Sync on the Onkyo on one sort of file, it might still be completely off on another. From what I can tell it might be related to the video refresh rate..? The receiver is connected to a 55" Samsung D8000.
So does any of you clever guys have any suggestions? I've tried resetting, gone through every kind of video mode on the receiver, turned Lip Sync on, turned it off again etc, and I'm going crazy.. I can't watch anything anymore as the lacking sync is so annoying, and I think I'm even starting to see things as out of sync when they really aren't

Help is appreciated!