Yes, that’s the note Antoine had to add when the NEO Stream wouldn’t work with the other available settings. I have no such problems or special requirements to get UPnP to work properly with my setup. And to be fair, the problems aren’t at all limited to iFi products.
Now it’s true I’m using purpose-built software on a general purpose computer rather than a purpose-built hardware streamer. But since this forum is dedicated to Audirvana, purpose-built software made to run on a general purpose computer, I don’t suppose most folks here will have a big problem with that. 