As an example, I searched Roon for Simon & Garfunkel and all albums are listed as CD, including Bridge Over Troubled Water.
When searching on the Qobuz app directly, most of the Simon & Garfunkel albums are Hi-Res, including Bridge Over Troubled Water.
This is just one example of only finding CD quality when searching Roon.
I built a fan free PC for use as a Roon server and connect to it over ethernet with a MacBook Pro in my music room. Mac is connected to a Chord Qutest via USB.