USB cables conducor - help

PC? Who could possibly care?

I don't.

Step #1: ditch using a general purpose computer as a streamer 

Step #2: experiment with USB cables. Slowly 

For your guidance, Nordost uses Silver plated conductors in their Heimdall and above USB cables.

Recommend getting a dedicate streamer first, Bluesound Node (130 latest version) or iFi......either $600 or less, I use the Node. Get a reasonable USB cable, I highly recommend a Supra USB cable.

Check eBay for Supra USB cables and should find the 2.0 version for about $55, or better yet the Excalibur for about $140.....IMO the best value in USB cables....only buy from Zendada who is the official importer

Check out final touch audio , they use a special copper with naturally accruing silver and some specs ofGold in the metal and then pounded into thickness 

it sounds very analog like and natural , Lampizator audio Carry  them 

the Callisto model  look it up many excellent reviews.