im pretty happy with how the ps audio sounds now other than the tiny bit of upper midrange sharpness that still remains.
Your very cheap interconnects are doing you no favors with this and should be the next thing you explore. As you found with adding the Node, everything in streaming matters and matters a lot. You should also consider adding an upgraded LPS (Teddy Pardo, etc.) to the Node at some point as it provides a nice performance boost for relatively not much $$$. In any event, glad to hear you’re happier with your streaming performance but there is more to be had there.