Surface Pro 4 and Dorico 3: no audio

I have both a Surface Pro 3 and a Surface Pro 5. I am able to use playback in Dorico 3 but only using Halion sounds. NotePerformer still does not work for me on these two computers after multiple attempts. I have tried all the steps outlined here in the forums, and compared my installation folders between these two system and another Windows computer where NotePerformer is playing correctly and there are no differences.

But the audio engine definitely has problems for me as well on Surface Pro computers.