Skin Width
This is the distance that rigid bodies are allowed to overlap. Setting this value too large will cause objects to visibly interpenetrate. Setting this value too small may cause objects to alternate between interpenetrating one frame and being forcibly separated the next, causing jittering. The best value depends upon variety of factors, including the size of objects in the scene, how close the camera will get to possible interpenetrations, the settings for Gravity Amount and Solver Iterations, the inflation amount of the physical meshes, and the frame rate of the simulation (as set in the 3ds Max Time Configuration dialog).
Solver Iter.
A global setting for the number of iterations the constraint solver performs when enforcing collisions and constraints. Higher values than the default may be necessary when there are many constraints, or the tolerance for joint errors is very low. Values higher than 30 should not be necessary. A future release may expose additional override settings per rigid body.
Если не получится возможно стоит попробовать с клозом.