Rigidbody movement slows down when adding a Collider

Unity Engine
1

Hello Unity community,

I’ve created a small space ship and I added a RigidBody to it. A script asks for user inputs and moves the ship accordingly by applying forces/torques. But if I also add a collider, the ship movement is still possible but much slower than without the collider.

Why does that happen? Any ideas?

Greetings
BrightBit

PS: There’s also a small “planet” in the scene with a sphere collider on it. Adding a rigidbody or removing it, doesn’t change anything.

2

I now noticed that the slow movement is caused by the size of the collider. By decreasing its size the applied forces and torques are much stronger (or the mass of the rigidbody is lower?) so the movement is faster.

I wasn’t able to find something about this fact in the documentation, though? Do you guys know something about this?