You could put together a Room endpoint by using a Raspberry Pi 4 and Ubuntu. I have one running with my Mytek and it's pretty fabulous.
I don't know that this will always outperform a PC but sadly the one area where a separate unit can outperform a PC is if ground loops develop in the USB connection. An especially bad problem when the PC and streamer on on different AC circuits.
Honestly it's a shame that not every DAC has complete isolation from ground loops but here we are.