I had huge audio delay using Atmos via e-arc, through my LG B9 to a Denon amplifier. The worst was The Matrix Unreal Engine 5 demo, the videos could be around 1.5 seconds out and was a horrible experience but was the only way to run 4k@120hz. In the end I gave up and went directly to my amp but it still has a bad delay at 4k@60hz.
The only fix I have found is to run DTS:X instead of Atmos which is a pain.
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Re: Digital Foundry Highlights Dolby Atmos Issues On Xbox, Playground Games Engineer Responds
I had huge audio delay using Atmos via e-arc, through my LG B9 to a Denon amplifier.
The worst was The Matrix Unreal Engine 5 demo, the videos could be around 1.5 seconds out and was a horrible experience but was the only way to run 4k@120hz.
In the end I gave up and went directly to my amp but it still has a bad delay at 4k@60hz.
The only fix I have found is to run DTS:X instead of Atmos which is a pain.