From a component point of view you have a nice system... I think pretty well balanced by having the LT preamp that is a bit warm and natural to offset the more analytical and a bit dry sounding detailed oriented amp and DAC.
Did you add the upgraded power supply to your streamer? The would likely be helpful.
Are you not using the internal storage on your Auralic Streamer? Normally you would use the USB to copy music into the streamer and then play from there.
The better the streamer the less the input will matter. I used to own a Aurlic Aries G 2. I use Aurender now. I really good streamer will isolate the source (whether ethernet or USB). The better the streamer the better the isolation. However, the input cable matters.
That is all I can say for now. I haven't come to a conclusion that makes me feel I can offer any advice yet. Maybe something you say in response will trigger further thoughts on my side.