I am probably testing the wrong sort of code. Short segment 3D vee carving. About 1200 lines.
Ordinary Mach, it runs in 13 seconds.
Tempest planner, the best I can get is 27 seconds and that is with jerk set to 1,000,000
Down around 20,000 it is snail pace.
S'pose this is not much interest to you. What sort of code is best to test?
Greg