You seem to have the same problem as a lot of persons here, including me.
Your game does not minimize, it crashes.
Or at least, the image-rendering part does because the sound is still active. By the way you may notice a few seconds of "freeze" before the desktop appears.
None of the tricks mentioned on this forum worked for me. So I hope CDPR is working on it and the next patch fixes it.
No, no freeze, just suddenly minimize as if I used alt tab.
Everything works find until that moment.