Artist control loosing connection

[planck]

Hello,

My artist control keeps loosing connection. It either looses connection and displays the avid logo, or sometimes, rarely, it completely hangs and I have to remove the power cable and put it in again.

Sometimes EuCon sees the unit as available but doesn't use it as seen on the picture.

I'm on OSX 10.13.4
EuCon version 18.3.0.244

For now the artist controller is directly connected to ethernet1 port on my macPro. I'm planning to add x2 artist mix, using a switch, but for now that's my setup.

Ethernet1 is on the top of the connection list as described in the Avid Installation instructions.

Any idea how to troubleshoot the problem?

Thanks
Alex