Then you still have the issue that the power supply is poor. What I mentioned above: the difference between those power supplies are gigantic! It is not a small change, you hear the improvement instantly. If you have compared with a nuc right from the box, then the nuc will sound not that great. It is not fair to compare with an Intel/Asus mini computer right from the box. SQ will really improve when it is build in a fanless case and it makes a further huge step upward when it is hooked to a good LPS.
If you really want a good case where there is space for an audiophilic output, like the JCAT, then I advise the Streacom FC9. In that case the modboard can be powered by an audiophilic one, and the audio card can be done separated. That is the way how to do it well.
It was a friends nuc and it was broken in. ( I have a group of local audiophiles and we get together a few times a year and sometimes bring gear over to audition. ) I power my JCAT card with an external LPS. I am happy with the Corsair PS which uses upgraded caps and is very low ripple.
The Fractal Case is excellent. Mine is fully insulated to remain silent. The PS's fan only comes on with heavy load and it never comes on playing music. Same for the Nocutua fans.
I am sure there is better but you would just have to hear my system with and without that computer. It was transformative and the JCAT card took it to another level. Adding the external LPS to it gave more detail, blacker background and more musicality.
Origin is a stripped down version of Studio. 3.5 has a lot of air and transparency with good detail. Studio has more body to the music, especially the midrange. The top end is also smoother and there is greater separation between instruments. Studio is also more musical and warmer without being overly warm.
As far as meta data is concerned, Studio does present that . Meta data is not important to me. When I am listening, I want no distractions. Audirvana is not server based.
If I really want even better sound quality, I can use Bug Head Infinity Blade. I still have a few versions on my computer. It is a pain to use but it sounds better than Roon, HQP and Audirvana. It is a very resource intensive program that does a lot of processing. It also clears out the RAM and sends the music to RAM. It has all sorts of settings to tailor the sound and you can set it for increased compatibility with your CPU. While loading up music, it does cause my CPU fan to come on but once it is fully loaded, the load decreases and the fans stop.
Don't get me wrong, Roon especially with HQP imbedded sounds great. I just prefer Studio with my system which has changed dramatically the last few months. And I pay just $4.99 per month. I am selling my Pass X250, BAT preamp and Magnepan 1.6 speakers. I recently upgraded my TT, phono preamp, cartridge and bought the Arendal 1528 speakers and a Mark Levinson 5805 integrated amp. Also added Duelund 16g XLR's. It is the best my system has sounded.