Best sound quality on Qobuz

I suspect the sound is affected by the RAAT protocol. I noticed exactly the sound differences described in this thread, but even using Roon, but with different protocols.
Although both protocols use exactly the same transport path (network, in my case), both are bit-perfect, yet the sound differences exist (RAAT sounds worse).
See details in this thread: Roon RAAT versus Devialet AIR.