Have been working on a granular and elastics tool for RealFlow for a few weeks now...it will soon be complete. This video shows an early stage test. Check other videos, stuff has improved a lot. Please dont ask for sim-time stuff...I dont remember :D but there is a video where you see all details (a RF preview). So you get an idea of the speed. Plus, this is all python stuff. No multithreading. C++ Porting is still missing.