I've had my set for about 1 week. There are many things I am pleased with regarding this television, but I am battling lip sync issues that are making me wonder if I should give Best Buy or Sony a call. How many of you have lip sync problems? This is my setup:
65x900a, connected to a Onkyo TX-NR709 receiver, in a 7.2 configuration. Connected to my receiver are a PS3 (slim model), PS4, Gamecube, Wii U, HD-DVD A2 player, Brighthouse Cable box. I noticed lip sync issues almost immediately. I've done some testing but will need to do further testing to figure this out. Both the TV and the Onkyo have the latest firmware, as do the game consoles. I have kept the Onkyo in HDMI Direct mode (no picture processing), and the sound processing is Audyssey. Previously, I had a JVC LCoS rear projection set connected to this receiver (and previously a Denon) that never had a hint of lip sync problems.
With the X900a, I've been using the A/V sync function to delay the audio to where it looks right, but sometimes I can briefly see that things are not perfect. The cable box needs about 100-110 ms delay, watching movies on the PS3 seems perfect at 125 ms delay, watching movies on the PS4 needs 200 ms (!) delay, and the HD-DVD player seems fine around 120-25 ms delay. I've also tried the WOW calibration disc to help on the PS3. I haven't had much time to try games, but it seems like some PS3 games look fine at 125 ms, while others are waay off. It is one thing if I can find the sweet spot and set it forever, but if it doesn't apply to the games (and I game quite a bit), then I don't think I can put up with this set to constantly fiddle with the audio sync. I need to do more games testing.
I mostly switch between Cinema and Game presets on the TV, and thankfully I don't notice any sync disparities changing between the two. Also, 3D movies on the PS3 seemed fine at the 125 ms setting. I did try connecting the PS3 directly to the television, and in that test it appeared that everything is synced properly. I tried using the ARC back to the receiver in this way, but it only passed 2 channel sound, which is unacceptable.
Input lag in Game Mode appears to be fine in both the PS3 and PS4, so it is really puzzling me what's causing the picture delay. I quickly tried some fighters (Guilty Gear, Street Fighter 4) and a arcade shooter (Resogun) and the action onscreen seemed to correlate just fine with my button presses and it seemed perfectly playable. I don't know if it's in the TV or something in the communication with the receiver. There is a setting on the receiver in the HDMI menu called Lip Sync, and it doesn't improve anything turning this on or leaving it off.
Anyone else experiencing similar symptoms?? Any gremlins with the sync come to the surface when this TV was added to your home theater setups? Should I try to exchange the set? Uniformity and picture quality are satisfactory to me, I'm afraid of getting something with a screen problem if I exchange the tv.