Yes, no issues with lip sync at all using Netflix and other apps (w/ DD 5.1 signals).   I only experience the issue with DD 5.1 TV channels via my set top box. ... View more

Just updated to v 1351.3 on my Samsung Q90R -- however, still no improvements in regards to lip sync w/ DD 5.1 signals. ... View more

Nope, not fixed with firmware v1335.   When will Samsung start taking this seriously?   ... View more

Ok, I have just updated to firmware 1318.0 on my Q90R--and I actually managed to get perfect picture/sound sync with DD 5.1 on some channels, which previously suffered from the infamous lip sync issues. I was thrilled to see this, but only to get disappointed shortly after.   Apparently, this is still very fragile--and something as simple as switching channel back and forth introduced the lip sync issues again ON THE CHANNEL, WHICH I HAVE JUST HAD PERFECT PICTURE/SOUND SYNC ON (before switching away to the other channel).   I have tried various settings and sometimes, switching both the TV and my set-top box off and on again seems to temporarily eliminate the problem. But, as mentioned above, the lip sync issues come back randomly. I am no expert on this, but it might have something to do with the pertinent devices' "HDMI handshake" (or whatever it is called)...?!   To me, this indicates that Samsung has acknowledged the problem (finally!) and is doing something to fix it. With that said, it is still not fixed--i.e., I still have to feed 2.0 stereo sound into the Q90R to fully avoid lip sync issues.   I really hope that the guys over at Samsung ups their game soon. This is the %$¤!%# FLAGSHIP 4K MODEL for crying out loud :-/ ... View more

Yes, I experience the same after having upgraded to v.1303 -- i.e., definitely still lip sync issues with Dolby Digital (5.1) input, but some improvement over v.1066. Consequently, I still have to go with stereo input only. ... View more

Great, thanks. Let's hope that Samsung will fix this before long.    I will definitely keep an eye out for any firmware updates. ... View more

Yes, I am 100 percent certain that my Q90R is running v1066. I updated manually from Samsung's support website (using a USB thumb drive).   As I recall, for some strange reason the TV would not fetch v1066 via the online update function -- although, said version was readily available for download on the support website-- which is why I downloaded and upgraded manually.   For the record; I experience the lip-sync issue consistently, when viewing TV channels with 5.1 sound input -- and likewise, I can eliminate any and all lip-sync problems by forcing my set-top box to output stereo sound only for all channels.   Specifically, the lip-sync issue seems to be that the picture is ahead of the sound; i.e., adding a delay on the Sonos device is not an option (as you are alluding to as well). ... View more

I also experience lip sync problems on my Q90R (and Sonos Amp) -- however, ONLY WITH 5.1 SURROUND SOUND INPUT SIGNAL.   I.e., TV channels that are broadcast with only stereo sound do not suffer from lip sync on the Q90R, but any 5.1 TV channels do. Netflix, HBO Nordic, etc., on the TV does not seem to suffer from these problems (probably as they are delivered through apps directly on the TV and not via HDMI input?).   Googling around various fora on the Internet, this seem to be a well-known issue with certain Samsung TV models (including the Q90R).   Forcing my TV set-top box (Humax YSR-4000) to downgrade all TV channels to stereo sound resolves the problem, but I am not happy about missing out on the original 5.1 sound input -- especially since I have a Sonos Amp, which does some "magic" with the input sound signal to create a so-called phantom center speaker in what is really just a 2.1 speaker setup.   It should be noted that the lip sync issue is only on some TV channels and, further, that the issue is experienced both through the Sonos Amp as well as with the Q90R built-in speakers. Thus, it has nothing to do with the Sonos Amp per se.   Also, it is worth mentioning that although the Q90R and the Sonos Amp both provide certain options for adding some delay on sound/picture to address lip sync issues, I cannot use that for anything since the lip sync issue is ONLY ON SOME TV CHANNELS. Adding a delay to fix lip sync on 5.1 TV channels will entail that the sound/picture on stereo TV channels goes out of sync.   I expect Samsung to resolve this through a firmware update, perhaps by adding the option of adjusting lip sync delay separately for stereo and 5.1 surround signals. ... View more