FlexHopper offers very fast physics simulation within Grasshopper. It is based on FlexCLI, an open-source C++/CLI interface to access the physics engine NVidia Flex from within the .Net environment. FlexCLI was developed by myself. It is built against NVidia Flex release 1.1.0. NVidia Flex is patented property of NVidia.
scroll to INSTRUCTIONS, follow the steps under "Option 1: Only use FlexHopper"
For more information on NVidia Flex go here: https://developer.nvidia.com/flex and https://developer.nvidia.com/nvidia-flex-110-released
FlexCLI runs on x64 architectures only. It was built against .Net 4.5.2
FlexHopper was tested with Rhino 5 64bit and Rhino 6 64bit and Grasshopper 0.9.0076 and Grasshopper 1.
Requirements: NVidia or AMD Graphics Card
NVIDIA: GeForce Game Ready Driver 372.90 or above
AMD: Radeon Software Version 16.9.1 or above