Bullet Multibody (Bullet3 API) ANYmal falling down (when num = 10 x 10)

[eastskykang]

When the number of ANYmal increases, the robots still fall down to the ground.

https://www.youtube.com/watch?v=S7MpEqYPYLg

[eastskykang]

Tested in pybullet too. Same problem appears.

source code:

https://github.com/eastskykang/pybullet-benchmark