disappointment, noise and unsync with stereo mode.

[FUINY7]

I doubt this. So you have Ethernet connected from each phantom to a network switch? In the Devialet app you have set the latency to the highest and you still have this behaviour?

I have only one attach to RJ45, change in latency doesn't change much beside being unsync to the lips while watching movies.
I was away since last few weeks, might do more test in the coming days (double rj45 connection).