Question about the speed of the billiards example

[parsarahimi]

I downloaded this billiards example and it runs for an entire minute to finish? I thought it was something simple that would figure out the solution in 100 iterations, in micro-milliseconds basically. Are my expectations a little too high?

[yuanming-hu]

I guess for the billiards example, the computation is little yet the majority of time might has been spent on the Python binding (pybind11).