Hello

yes , for rope it's mandatory to move the vertices very slowly. As I do still render, I often export and then use my saved object for new simulation if it goes wrong. I also saw (trying the "knot exercice" !) that extreme folds made self penetration.

@Gerald: about my question, I made a new test with a strong rigidification of both end of the rope and then moving the ends. It works. I have better results than in my old projects.

@Erick: didn't though about tree simulation that an intersting idea that I must try. Wonderful gallery and I agree with you: plenty of old clothes found a new life with VWD. Do you use the DS4/Octane bridge? What's you feedback?