HI lilpyro,
No, I have not tried 24bit material on the LP I have here as we mainly use the uTrack for our shows.
The point that I tried to make is that I also noticed that if a playlist contains material with different samplingrates or bit-depths, the uTrack needs time to adjust itself to these new settings and that features like pre-load will suffer because of that.
It is therefore that I try to take great care that all materials in a playlist all is at the same sampling rate and bit-depths to avoid any such circumstances.
And once following this strict discipline, I have to say that all seems to work flawlessly so far (14 shows and counting 🙂 )