If you're experiencing audio delay issues, read this

I have noticed with the update on my LG C7 the lip sync issue with dolby digital to the playbar is not a problem on my Foxtel Cable Box or my new android streaming box. My Apple TV 4K works fine as well, however that was fine before the update.

Unfortunately the PS4 Pro still has terrible lip sync, however as this is the only device still experiencing issues for me and I never watch physical disc media anymore, I really don't mind putting the PS4 Pro in stereo mode for the odd game I play.

This has meant I can now thankfully remove the annoying optical switch I had setup. I hate extra clutter behind the TV and adding in extra cheap devices in between expensive equipment.

The update seems to have improved the issue. I had some delay with some TV app even with Apple TV 4K. It works better. I will test with my Sony Bluray.

Funny coincidence : I sent few weeks ago a registered letter with acknowlodgement of receipt to Mediation Department of LG mentionning the URL of this discussion.

I can confirm that the latest updated applied about a week ago has reduced the lip sync delay. I can still notice that it's a little bit off, but definitely a significant improvement from before.

Which TV are you referring to, and what firmware version?

I can confirm that the latest updated applied about a week ago has reduced the lip sync delay. I can still notice that it's a little bit off, but definitely a significant improvement from before.

Which TV are you referring to, and what firmware version?

It's an LG 65" B7A and the firmware version is 05.80.15

The update seems to have improved the issue. I had some delay with some TV app even with Apple TV 4K. It works better. I will test with my Sony Bluray

I talked too quickly. The delay issue is still here for some TV shows on my LG C7.

After months of frustration(and hearing my wife complain about spending $5,000 for a tv and Sonos system that couldn't sync audio/video correctly), I tried the solution on my LG OLED65C7 that was suggested by MattiasI74: "I have had same issue, but think it was solved on my LG OLED65C8PLA activating setting "AV-sync" and "bypass"". VOILA! Problem solved, happy wife, happy life. Give it a try....go to All Settings-Sound-A/V Sync Adjust-turn on Bypass. Good luck!

I experienced this problem myself this weekend while watching Netflix from my PS4. I bought my Beam last week but haven't had that much time to play with. I have a bit older LG65LB730V with webos version 1.4.0-2529.
However I managed to solve the issue by doing two changes to the audio setting (translated from swedish).
1. All settings -> Sound -> Sound out -> First select "External speakers", obviously. But ALSO: "Digital audio out" set to "Auto"
----- My setting was set to PCM, causing the TV to transcode the audio to PCM
2. All settings -> Sound -> Adjust A/V sync -> On and set to "Bypass"
---- My setting was set to "Off".

My PS4 has "digital audio out" set to "Dolby digital".

Good luck!

After months of frustration(and hearing my wife complain about spending $5,000 for a tv and Sonos system that couldn't sync audio/video correctly), I tried the solution on my LG OLED65C7 that was suggested by MattiasI74: "I have had same issue, but think it was solved on my LG OLED65C8PLA activating setting "AV-sync" and "bypass"". VOILA! Problem solved, happy wife, happy life. Give it a try....go to All Settings-Sound-A/V Sync Adjust-turn on Bypass. Good luck!


I am about to pull the trigger on a C8 but this is the only thing holding me back...has the lip sync issue with the Beam been corrected on the C8? Does this method also work on the C8 and do you retain all eARC features?

Should I just wait for a C9 with HDMI 2.1?

Just bought myself a 65" B8 and as a pre-existing Beam with 5.1 owner via HDMI ARC, spent a frustrating Saturday work to resolve lip sync issues. As per some of the comments here, the picture on the LG OLED is so stunningly good that I am prepared to live with a few compromises as the cost to move to a similar TV that MAY not have the 5.1 lip sync issues with anything approaching as good a picture (Sony OLED or possibly the Samsung Q9?) is at least another £750 in cost at the time of writing. So I have resolved to get things working as well as I can. Current status:

1. Onboard apps - Netflix, Rakuten, Amazon Prime all seem to be fine. I have always found that streaming services do occasionally have a small amount of lip sync variance - perhaps the "A/V Sync Adjust-turn on Bypass" has addressed this one if it was ever a problem before?
2. HDMI in from 4K Blu Ray Player - definite audio delay on default setting but my blu-ray player allows me to adjust both the sound or picture so I have been able to delay the picture to resolve .
3. HDMI in from Cable TV box (in the UK so Virgin Media V6 box) - definite audio delay. Unfortunately there is no adjustment available on the Virgin V6 box and it is quite bad. Switching the Virgin V6 box to output PCM stereo immediately addressed it, so I have resolved to forgo the 5.1 with the normal TV channels as I can live with this compromise (and can always switch back again when watching the footie etc)
4. I am yet to test the free-to-air digital receivers on the TV as we use the the cable box for that so am unable to comment on how the "native" TV tuners work with 5.1.

So it is annoying as the 2015 Sony 55" 1080P TV it is replacing had no problem with ARC pass-through, but in my view the compromises are worth it for the picture from the B8 at the price point it can be purchased for right now (March 2019). Of course if I had bought the C8 or E8 then the price gap to the main competition is much smaller and maybe I would have a different view.

Hope that helps anybody considering a purchase.

Hi,
I have a LG OLED55C8PLA which is connected to Sonos Playbar, and Play 1 speakers to give 5.1. I have a Sky Q box and also an Apple TV 4K connected.

I was getting quite bad audio lip sync delay. I tried the various setting changes on TV including changing the AV sync Adjustmemt being set to Bypass. In addition worth pointing out I am on the latest software version, but still the lip sync delay persisted.

However I tried switching the Opticsl cable from the one that came with the Paybar to a more expensive cable. This seems to have fixed the problem I’m pleased to report.

So I would recommend anyone tries changing the cable as seems to have worked FYI.