Has anyone come up with a long term fix here? Running a LG C2/Denon 3800. New to this thread but having the same issue as everyone else, and have tried the same troubleshooting as everyone else. Here’s what I found works best for me:
1. Keep ATV4k match On/On
2. Denon at Enhanced 4k
3. Denon at Game Mode (bypass works better but I cant stand not seeing my volume display)
4. Denon HDMI Control On
5. Denon ARC off
6. Denon TV Switching off
7. Denon Auto LipSync On with value of 0-15ms depending on app
8. LG CEC set to off (i also get annoying input switching issue when its on)
9. LG SmoothMotion off yields best result but sometimes I turn it on for de-juddering
I feel like theres no perfect solution here, but for some reason I don’t recall having any issues with my 2700h.
I have an LG G2/Denon X1700H/Apple TV 4K (newest version) - and I used to have a lot of lip sync issues. It went away for pretty much everything except Plex, and I’m not sure what made it better (maybe the newest version of Apple TV 4K)?)). When I have issues with Plex lip sync, I use Infuse Pro (which always fixes the problem). Infuse is great for fixing lip sync issues with Plex and to watch 4K movies (Plex struggles with both in my world).
My settings below to compare for your list:
1. Keep ATV4k match On/On
YES
2. Denon at Enhanced 4k
YES
3. Denon at Game Mode (bypass works better but I cant stand not seeing my volume display)
DON’T USE
4. Denon HDMI Control On
YES
5. Denon ARC off
’ON‘ FOR ME (BUT IT’S GRAYED OUT - LOOKS LIKE I CAN’T CHANGE IT)
6. Denon TV Switching off
’ON‘ FOR ME
7. Denon Auto LipSync On with value of 0-15ms depending on app
’OFF’ FOR ME
8. LG CEC set to off (i also get annoying input switching issue when its on)
’ON’ FOR ME (and I know what you’re talking about with input switching issues…I just put with it)
9. LG SmoothMotion off yields best result but sometimes I turn it on for de-juddering
’Smooth Gradation = OFF’, ‘TruMotion = OFF’ (not sure if I’m looking at right place? ‘FILMMAKER MODE Auto Start = ‘ON’)
Hope this helps - I feel your pain! It drove me crazy for months, but doesn’t really impact me anymore except for the Plex app in Apple TV 4K.