I finally got my 82" Q90R last week. Thrilled with the picture, amazing upgrade to my 10 year old Panasonic Plasma. The wall adjacent to the TV is all windows with a southern exposure, and the daytime glare on the old plasma was so bad that the TV was unwatchable. The Q90R anti-reflection and brightness just completely eliminate those reflections. I am super happy, can watch TV during daylight hours again.
And watching 4K video is awesome. I love everything about the picture.
But there is one huge problem that is driving me nuts - an uncorrectable audio delay when watching TV through my Fios TV One cable box. My setup is very basic - Fios into One Connect Box on HDMI 1, then HDMI ARC to Samsung HW-Q90R soundbar (ATMOS capable, with wireless surrounds). Samsung TV, Samsung soundbar, this really should work flawlessly. And with internal TV apps - Netflix, Amazon Prime - the audio syncs perfectly with the video. But with the FiosTV One box, the audio lags the video by probably at least 200 ms. It is very noticeable. And unacceptable.
There are audio delay adjustments on both the TV and the cable box, but these adjustment only add
audio delay, they aren't design to reduce it, I guess because the normal situation is that delays in video processing cause the video to lag behind the audio. My situation is the opposite - the audio is lagging behind the video. So the available delay adjustments just make the situation worse.
Interestingly, if I change the Fios box audio output from DD to LPCM, the audio delay is fixed! But at the expense of losing the surround channels, which is not acceptable.
So the TV seems to be adding audio delay for DD sources, and I cannot seem to find a way to fix it. I am guessing that if I run the Fios box into the soundbar rather than into the TV, and let the soundbar pass the video to the TV, it will probably fix the problem. Haven't tried that yet. Seems with that setup I wouldn't be able to change sources between Fios and the internal apps with the TV remote, it would add a layer of inconvenience to change sources through the soundbar. I just want my setup to work, because it should.
Any ideas on what is going on here, and how I might fix it?