Mesh Collider Bounciness working only in a few areas

Hello,

I'll just right to the point:

Im making the mesh collider bouncy using a script which has worked perfectly fine on the past, it still does, but not with big 3D platforms. I used the same script on 30 levels and it worked really fine, the platforms were smaller than the current ones. Now when I make the objects bouncy using the script it only works on some areas...which is really strange, it's the same mesh, and when I disable the mesh renderer the mesh collider looks fine. If you jump on the platform with the bounciness enabled from a platform which has no bounciness than you keep bouncing, but if you disable the bounciness than you still keep jumping.

I think this all happens because of the big size that the platform has and the amount of detail put into it.

The scene has 300k tris.

Thank you for your time, and I really hope someone can help me with this!