Keep in mind that NotePerformer is not up to full usability in Dorico - there are a number of things it does that aren’t worked out, yet: harmonics, solo voices, and so forth. It might not change your initial opinion, but for the money it is a very good value. And - so far - each new version has been a free update. Also, Arne is very responsive to any problems.
I have found that it helps to play around with the settings - I did this with NP in Sibelius, and do so here (limited at the moment).