Let me start with a disclaimer: my system is modest in comparison to those of others who have responded to this question. A move to a smaller home 10 years ago forced me from my multi-component tube based Counterpoint system, fully upgraded by Mike Eliot, to the single box solution offered by Devialet. Since then, I have been using the DAC built into the Devialet.
RE: recommendation that you consider going to a dedicated streamer: I streamed digital files through computers for 15 years. I built each of my music server computers - all small form desktops, operating from a position on the stereo stand, that I controlled using a remote keyboard. I payed careful attention to power supplies (always linear), removal of all extraneous OS features and background functions, etc. I believed, undoubtedly mistakenly as there always is work to be done in the garden, I was as close to an optimal dedicated streamer as one could get, at the time I built each of them. A couple years ago, for reasons unrelated to sound quality and system performance, I replaced the computer with an Aurender N200. In my system and to my ear, the Aurender was an upgrade well worth its price.
RE: cables. I’ve owned and enjoyed several sets of Transparent analog ICs, but I can’t speak to the performance of their digital cables. I’m a long-standing fan of DHLabs, who offer, I think, tremendous bang for the buck. So, when I decided to upgrade my usb cable, theirs was the obvious first step. In my system and to my ear, compared to the Pangea it replaced, the cable significantly tightened the bass presentation and sound stage, and improved tonal qualities at the top.
One final note. I agree with the recommendation that you try to shorten the length of your USB cable. About 40 years ago, I read a review of Von Gaylord chinchilla ICs published in International Audio Review by Peter Moncrieff. In the course of his review, Moncrieff observed that the 2m cables sounded better than the shorter or longer lengths. Now, at the time and from anyone else, I would’ve dismissed such a suggestion as nonsensical. But, I had had quite a bit of experience with Moncrieff by then and had come to respect even his most unlikely observations, of which there were many. So, a couple of friends of mine and I contacted Von Gaylord and asked that they send lengths of their chinchilla cable ranging from 1-3.5 meters. After extensive listening, we came to the same conclusion as had Moncrieff. Still today, all my analog and SPDIF cables are 2m. So, when I decided to experiment with usb, I naturally started with several lengths to compare. In my system and to my ear, the 1m DHLabs usb sounds better than the 1.5m and 2m.
Good luck with your project and have fun with the process.