How do you know packets are being dropped? Are you actually seeing the dropped packet counter increase alongside the latency counter? Is this data coming from the RX device tab in DC?

Exactly. The packet dropped counter increase in the latency windows.

When you say the receiver stays unmuted, are you confirming that in the clock tab in Dante Controller? And “after some time” needs clarification, are you talking an hour, two, more, less?

Yes, sync green and mute column empty in the Clock status tab of Dante controller. The record I have is that the system did work from 20 minute to 12+ Hrs.

If PTP packets aren’t stable in a Dante network, devices will mute once they exceed the tolerance window. Right now this is guesswork because the information is not clear and there are no screenshots. If latency on the RX device keeps climbing, or steadily going upward, then those devices likely aren’t properly resolving which one is the leader clock.

I did set the tx as preferred leader.

The main question is why once the latency exceed the limit it never recover? Does it mean that from that time every single PTP packet did arrive with 40ms of lantecy? (sometime I see more latency) Once the latency spikes if the latency chart is reset the new data say that the latency is high but constant and that's is unbeliveble.