BEPUphysics

That was it! Norbo, you`re awesome :]
Thanks a lot, I`d never think about floating point precision issues. I just scaled down whole world 100 times and everything is working good now.

Hello! I`ve been fighting with it since like eight hours, and I`m fed up. I have basically no idea what may be going wrong. First and most annoying problem: I`ve got two tanks in my test app. They both are created like this: List<Entity> spheres = new List<Entity>(); for (int i = 0; i < czolg.mdl.Me...