Since switching to 3.5, the NP choir patch sounds different to me. It sounds darker, and slightly lower in pitch. I don’t have Dorico 3.1 any more to compare, but does this sound correct to you? https://www.dropbox.com/sh/a3wldgn9banvpbu/AACkoAeNEo2BgKKgLOLebosxa?dl=0
There’s a rough Dorico file and an audio export. Am I imagining things?
I’m running NP 3.3.1.