Thanks Antoine. I already disabled Realtime control; but when I did that, I either got silence or distorted sound. Anyway, I don’t need “Realtime control”. I set it up once and I’m happy with the result.
So when you say
You need to disable the “Realtime control” in the Audio unit settings of Audirvāna Studio to make it work.
Do you mean plug-ins won’t work via UPnP unless “Realtime control” is disabled?