@Glen some ideas: it's useful to clear the exchange files (in utilities) before starting a new simulation. Exchange files stay even if you close VWD and Poser. There is also a button to refresh the animation from Poser (in the last video) I didn't try yet the hair simulation : on page 37 of the manual, VWD talk about curly hair vs smooth hair (which is for me the case of Desire Hair). We must separate the strands to make them independant. Strands which are too close will interact and make a wet hair effect.