Vue 4 is the best, thats true. It might is unstable in Version 4.0 but if you get the free (for thoose who have bougt an version of vue will be registered users) upgrade, version 4.1 or higher, i promise that it will be stable...it did really work for me. Bryce i slow on redendering and the results doesn't look real, vue 4's results is much better. Bryce 5 is even slower...