About precision and subframe sampling for rigid body dynamics…here’s my understanding of how these two are related. Note that nobody confirmed this when I asked around, but then again nobody gainsaid it either 😉

The precision determines how frequently the simulation is calculated. For example, if Precision=120, then there is at most 1/120 of a second between calculations.

The subframe sampling determines the number of samples per frame.

So, if you are have this:

• 30 fps
• Precision = 120 per second
• Subframe sampling =2 per frame

Then the RBD simulation is updated/calculated 4 times per frame (120/30), and ICE takes 2 samples of those calculated values per frame.