Thnx for the extended reply! And info!
It’s the combo HDMI out from FCPX and analog audio out from Mac Pro that causes a-sync on TV.
The Mac Pro has HDMI 1.4
For the Samsung TV I can’t find what version of HDMI it is running…
Optical out from TV is giving me better audio sync, but I have still to adjust some audio delay settings in TV menu.
But then audio seems a little off when looking at my computerscreen. And sitting in the middle of audio sync gives me the feeling that both computerscreen and TV are off. And I want at least one reliable playback that I use for my sound editing. Mostly I do that looking at my computerscreen.
Maybe connecting a AV receiver with HDMI in/out between Mac Pro and TV will so some good..?
Or just I buy a new model TV with the latest HDMI version.
In the past I was using BMD Ultra Studio Mini and Aja IO XT, that works, but I feel that not using any in/out device with required drivers works so much smoother. Even when I was working with Avid, disconnecting the Nitris box gives faster timeline respons.
So I was happy when Apple announced supporting HDMI out from Mac Pro for external full screen viewing.