Interesting,
Much like you I have no issue with DVD..I have been experiencing lip sync issues with my direct TV satellite HR-20-700. May be showing a little ignorance here but it never occurred to me the power up sequence and or the TV not acquiring the DVI-HDMI at the same time as the optical audio, may be the issue. I also have a harmony 880. I am going to change the sequence and play with the delay settings and see what happens. Good place to start, thanks for the tip.
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Outlaw 990/7125; Parasound HCA 1500A; Samsung LN52B630; OPPO-BDP-83 Blueray
Belkin PureAV PF60; B&W 604S3 Mains; B&W LCR600 S3 Center; B&W 600S3 LS, RS, LB, RB
Outlaw LFM-1 Compact Subwoofer; Boston Voyager 3 (Outdoor zone 2); Harmony One