When we were designing the Miarmy product, we planned integrate NVIDIA PhysX engine into Miarmy. Miarmy now can easily handle more than 5000 agents and more than 100,000 rigid bodies on a Windows HOME level PC. In our design, all the physical contents are calculated directly in PhysX engine and we just display them in Maya, so, there is no any bottle neck between PhysX and Miarmy when simulation in process.