Subject says it all. 😊 
Has the dynamic hair section been improved and fixed?

So far (< Poser 12)  I have always had problems with collisions when adding hair as fur on animals for example. The Bullet physics calculations mostly go through the body parts even though collision is set to the whole animal (including children) and the hair groups. The Poser legacy version is slightly better but not much and is very slow.

Dynamic hair is not as unusual or complicated now a days as it used to be for example when I worked with the furred cats back in 2005. 😁 Even Blender has a good dynamic hair system with good collision detection and fast calculations. 

So, will we see better, easier and faster dynamic hair in Poser 13? 😊