LG 60PA6500 audio out of sync on all inputs/outputs, even built-in speakers

Hey everyone, I posted this in the PA6500 specific thread, but thought it was likely a broader issue that I hoped to get more eyes on it. So I apologize in advance for the double post, it's not my intention to spam the boards all over with it. I should have made this post to begin with.

I've had my 60PA6500 for several months now and have noticed a sync issue with the audio for the whole time and I'm finally ready to tackle it. Speech is about 1/2 second delayed from the mouth movement regardless of what input (digital cable over coax, Uverse over HDMI, HTPC over HDMI) nor does it matter the audio output. I had the optical going into a Yamaha receiver and now my new Sony Soundbar, both have the issue as well as just using the built-in speakers. My uneducated guess is that some video filtering is going on and delaying it without accommodating for the audio. Do you guys have any ideas on where to start? I'd start with components, but all of them have the issue!

Appreciate any assistance. Love this set, it's a huge value and looks fantastic.

Getting a monday morning bump in with hopes I may receive some insight on this issue!

Thanks!

I'll try the OTA when I get home. The Yamaha has been relegated to the basement, and the new Sony soundbar doesn't appear to have the feature to offset. There's some AV Sync setting that made it a LITTLE better, but it's still off.

What's an RTV channel? This happens on all sorts of u-verse channels and even on my HTPC.

I believe the TV only has digital optical out, and I'm not taking the sucker off the wall anytime soon to swap out to a different cable to test. I find it strange that the built-in speakers do it also, so I'm hesitant to think it's the type of output.