Stream with the new board

[cereal killer]

I use these: https://www.amazon.co.uk/Postta-Gigabit-...790&sr=1-7

Have you tested these against, for example, Meicord or the very good quality, but not expensive Supra Ethernet Cables?
@KIBM, give the Supra cords a try, they are Cat8 and fully shielded, and to my ears sound better than the Meicord.

To add further detail, I've been able to set a static IP address with beta 12...

I'm not sure it's a good idea, given their own release notes for beta 12 state that fixed IP is not functional yet. I started with a fixed IP after the CI upgrade, and it worked for a while. But soon Devialet lost its connection to AIR. I changed to Dynamic IP, and the problem has not reappeared since.

Funnily enough i just checked the setting and its reverted back to DHCP