I'm not criticizing these usb decrapifiers, most effective in what they offer. My contention is why should I purchase music server that costs upwards of $3k and not get optimized usb out. Many of these server guys offer their own usb decrapifiers which they charge premium for, at this point you might be into $10K territory, if going this route just spend the $10K and get the server with optimized usb port built into it.
I see no point in purchasing any server with non-optimized usb out, you're spending too much now and further spending required down the road. Best choices as I see it are:
1. Single computer setup with OPTIMIZED usb port out direct into dac. Simple and effective usb setup.
2. Two computer setup, separate server/streamer. Advantages are not having to use relatively low grade usb out on server, can add audiophile network switch (don't have to with second ethernet port on server), choice to use optical or ethernet galvanic isolation post server, most streamers are usb renderers which means no add on devices, superior on board clocking with many streamers, best to separate Roon core from endpoint for Roon users. Can also use combo streamer/dac with this configuration.
Based on my research the only servers I've discovered fitting needs of optimized usb outs are limited to the aprox. $10k servers or atx motherboard builds with Pink Faun or JCAT usb.
Two computer setups much greater flexibility and no need to spend $10k+ for what may be inferior performance for the single computer setup. With this setup streamer is the most important component, server only requires minimal processing abilities. Server does become more important if using high level dsp.