NP does understand the predefined “non vib.” playback technique used on its own.
What “incomplete” means is that it may not interact properly with other playing techniques. That is a limitation in the current version of Dorico, not in NotePerformer. NP has partially worked round it by creating playback techniques for most common combinations, but there is a limit to how far that can go before the result is just an unmanageable mess with literally thousands of different entries in the expression map.
Looking at the expression map, non vib. should work with some other “basic” techniques like detaché, marcato, etc, but probably not with more complicated combinations.
If you want a particular combination of techniques that include non vib., you can add it yourself to the expression map, but it’s not practical for NP to provide every possible combination straight out of the box.
This is what the solo and section violins sound like, with and without vibrato. Note, the change in articulation for the shorter notes is NP’s artificial intelligence algorithm, not a playing technique marked in the score. The section non vib. has detuning between the individual players in the section, so it’s not a “pure” sound.
NP violin demo.zip (1.24 MB)