Should actor massScale affect all aspects of simulation?

[Qriva0]

There is quite a large difference in rod behavior when changing rotational mass. Test any of the sample scenes by changing the rotational mass of rod control points.

Well changing one control point to make some particles with different weight changed behaviour, but I mean situation where all particles are 10 or 0.1, I could not find much difference, if any. However I guess I know why - I think that I most likely tested that with all compliances set to 0, because as you said, changing mass actually affects rigidity, but only if compliance > 0.

This, combined with aerodynamics is probably the cause of different behaviour.

Nope, depenetration against a static collider is not affected by mass. Only by penetration distance.

Note that extremely large or extremely small mass values can affect collision behavior due to floating point accuracy, I've seen this before in some user scenes.

Good, so as expected.

Thank you very much, that was really helpful!