Two things will limit your ultimate SQ:
1) FLAC files streamed from Tidal
2) Player that supports streaming
FLAC files can probably be transcoded to WAV using HQPlayer if you can figure out how to use it.
If you were to change to a non-streaming solution like Linn Kinsky and Minimserver on a Mac, this will outperform any streaming software out there. I have tested many of them. This is the most live of any sound I have ever heard. You can also take your favorite tracks and make them WAV and not FLAC. This will make a much more live presentation. Kinsky works with UPnP renderers.
Steve N.
Empirical Audio