I has a Roku Box hooked up to my TV and the sound was fine when people talked. I just bought a VSee Box and the sound doesn't sync with their lips. If directly connect the VSeeBox to the TV the sound syncs when the people talk. I think it's my Receiver, but I have tried all the settings and nothing works. I read the Denon doesn't have 4K output, but I don't think this has anything to do with it. I was thinking about upgrading to the Yamaha RX-A8A.
I have a Sony Bravia II 65"
Denon AVR 4311-CI
VSeeBox
Those boxes are almost certainly illegal in the US, and you are running significant risk if you use it.
It seems audio issues are prevalent with those units, yours in particular. I suspect they did not design the HDMI continuous handshake issue properly, and when there are two handshakes vai the receiver and receiver to TV it can't cope.
Have you tried connecting the unit to the TV and getting audio back to the receiver via eARC?
Really, that was an unwise purchase and you are exposing yourself to risk. I expect that the whole outfit will get shut down by the authorities sooner rather than later.
