I’ve found Roon runs best on Windows believe it or not. I’ve used ROCK and Linux versions and found either performance degradation or dependency issues that were too much hassle. So I keep Roon on Windows by itself. Perfectly stable.
HQPe requires significant horsepower to upsample using heavy modulators and by using the very low power NAA device fed with a normal fiber link (no fancy switches or other non standard Ethernet solutions) I’m sure there is complete isolation from rest of network vs. directly connecting high powered HQPe machine to DAC.
All of my audio gear except for amp and speakers is housed in another room so I have the freedom to run fans and not fuss with making passive devices work.
I use the volume limiter in HQPe and have never had a problem with it jumping to max, unlike Roon prior to them implementing volume limits. HQP and Roon integration allows me to change volume in Roon and it passes to HQP, all the convenience of staying in the Roon interface with all of the audio performance of HQPe.