Add XPS physics to each physics group.

[Chrisc78]

Just about all physics problems can be fixed with XPS physics but setting all physics manually to the whole model is not fun.
With the new physics it's separated by groups that we can turn off just one group if you want, I would like to control that one group with XPS physics while all other groups run with the normal physics.

[Chrisc78]

I really hope you can do this, It's usually boobs that has the most problems with PMX physics, and you have so much more control with the XPS boob physics, I just don't like turning off all other physics that I have no issues with.