+2 on the LinkUp cable recommendation. I wouldn’t hesitate to run it from the router to switch, with the short run after the switch using a better cable or even LinkUp into streamer. Should be an improvement over the cheap cable.
Add Purist Audio Design CAT7 to the list as well for the short run into streamer.
I use and like the Network Acoustics Eno streaming system (passive filter and cable). It made a nice improvement in my system.
Buy with a solid return policy though. If you don’t hear any improvement (unlikely) or don’t like the change in sound, you should be able to return.