I've decided to start this thread as this will be a base project for me to learn how to create a body from scratch for Skyrim SE for the UNP based model. I've got some really good news. I was playing around with getting a higher poly body and I figured it out. I'm working with the original UNP. Here is a picture of the polys from the original and the new one. This will be an on going project to build up a new UNP Body for both UNP and UNPB. Once I have the basic body setup. I'll add lady bits. I
Well, actually I was refering to the bounce/jiggle side of things - sorry for that.
That said, collisions does work, just not 'out of the box', really, since you need to write/find/get xml's for all relevant meshes, except the female body & vagina meshes.
All the basic xml's needed are listed in defaultBBPs.xml. Open the file in a text editor and out-comment the unneeded UNP shape ref's. If using the max body, it should look like this:
<default-bbps >
<!--