Problem with colliders going through platforms

Questions & Answers
1

I have terrain with a mesh collider (with convex set to false) and a spaceship with a mesh collider (with convex set to true).

There are certain points in the terrain where the spaceship goes through very easily. I do not understand why this is happening because these areas are pretty flat. What should I be looking for?

I am not using any special sort of terrain, just a basic low polygon mesh.

3

The problem is because your spaceship uses a mesh colider it will be far more efficient with a box or sphere collider.

I suggest you to user Compound Colliders instead.

2

I would suggest you use a Box Collider, instead of a mesh Collider. The same thing happened to me, but it worked when I changed it to a Box.