Expected performance/stability difference between constrained rigidbodies and compound collider?

[proc-sim]

I am trying to simulate a concave ridigbody. Since PhysX does not support concave dynamic colliders, it seems the only way to simulate such a thing would be decompose it into convex parts and attach those parts together. Constraining convex parts together with completely rigid constraints (no DOF) often results in a lot of simulation instability (if a lot of contacts are generated there's a high likelihood the whole simulation will just explode). Is there a stability or performance benefit to creating a compound collider instead? Or do they work the same way internally?

[kstorey-nvidia]

You can add multiple shapes to a single rigid body, which is far more efficient and stable than trying to constrain a large number of rigid bodies together with fixed joints.

Hope this helps

[tysoni]

Thank you, just wanted to confirm that before rewriting my app to support it.