How to best tune world simulation parameters

[notnullnotvoid]

In b2WorldDef there are parameters contactHertz, contactDampingRatio, jointHertz, and jointDampingRatio. It seems the samples use a step size of 1/60, in which case the default value for contactHertz is half the tick rate (30hz) and jointHertz is equal to the tick rate (60hz). Is it a good idea to maintain these ratios when changing the tick rate? And should contactDampingRatio and jointDampingRatio also be tuned to account for the tick rate in some way? It's hard for me to understand what those two parameters are controlling.

[erincatto]

Normally you should not need to tune these values.

I suspect you are concerned about resolution speed for a character mover. I plan to work on character movement features for 3.1.

Nevertheless, you should probably not increase the contact or joint hertz much because this can lead to jitter. Consider reducing the contact damping ratio from the default of 10 to increase contact resolution speed.