Hi, depending on your problem, OpenSim finds the best optimizer. Please see: https://simtk.org/plugins/phpBB/viewtopicPhpbb.php?f=91&t=3854&p=0&start=0&view=&sid=77b9299bc1a4dc42ad43083b9c27d6be In my experience, if you omit the constraints from your model, the problem will be solved much faster. T...

I would like to process real-time updated trc file data by inverse kinematics analysis, however, it takes too long to start ik_tool.run every time, and I would like to know if there are other inverse kinematics functions that can process the data faster.