Improving stacking stability

[Dragonlord]

I'm trying to improve the physics simulation of bullet. I have a simple test case:


Furthermore I have 5 cans on the ground stacked on top of each other in a straight pillar each exactly in the middle of the one below.

I tried different parameters but the stack (at best) stays put for a couple of second then falls apart.

What did you do to improve stacking behavior?

[Dragonlord]

I checked with debug drawing and the 5-can stack sometimes deactivates while the 10-can pyramid does not deactivate. After some time the active stack tends to fall apart.

So if I could increase the deactivation conditions I could improve these cases. Personally I think for a game it is better to have stable physics than keeping objects as long active as possible. But I can't figure out what options I have to improve the deactivation behavior.