Hi! @vsosa1314 , I’m not 100% sure about, I think 2 network interface might help too, plugging them to the same switch (or router), ((if needed: assign IP, subnet some dummy dns… as nowadays win used to complain w.o dns…wtf)). My experience is if one app is using a network card for ArtNet, it reserves it and doesn’t allows to use it for the another app.
There is one tricky thing until ArtNet settings panel is done:
I know already my system, but you have to discover it for your own, which network card is picked by VSTL for ArtNet.
If you found it, you’re almost done…
crossing fingers 
F