At the moment I'm working on an auto crash scene. I've set up a good rigid body sim and perented a low poly car to it so that I can run a soft body sim on it and then use it to deform the high poly model.
But whatever I do the soft body sim will not have permanent deformation, even though my plastic value is at 100.
At the moment I'm working in Blender 2.79b. I really hope someone can tell me why there is no permanent deformation and what I can do about it.