Wyse 3040 and dual IIyama in display port

Hello,

We have  somes troubles with 3040 ThinOS and IIyama screen that are connected in Display Port.

When we turn on Wyse, sometimes, one of the screen did not turn on and we have to disconnect power cord of the screen and connect it again to turn on.

Sometimes, the two screens are working but after connected to the virtual machine (we are using Vmware Horizon) one of the screen is turning off and we have to disconnect power again.

This problem happen on every Wyse 3040 with IIyama display but this is randomly.

Did anyone have this problem too ?

Thanks