How to collide objects with high speed in Unity

Question

I try to create game for Android and I have problem with high speed objects, they don't wanna to collide.

I have Sphere with Sphere Collider and Bouncy material, and RigidBody with this param (Gravity=false, Interpolate=Interpolate, Collision Detection = Continuous Dynamic)

Also I have 3 walls with Box Collider and Bouncy material.

This is my code for Sphere

function IncreaseBallVelocity() {
rigidbody.velocity *= 1.05;
}

function Awake () {
rigidbody.AddForce(4, 4, 0, ForceMode.Impulse);

InvokeRepeating("IncreaseBallVelocity", 2, 2);
}

In project Settings I set: "Min Penetration For Penalty Force"=0.001, "Solver Interation Count"=50

When I play on the start it work fine (it bounces) but when speed go to high, Sphere just passes the wall.

Can anyone help me?

Thanks.

Edited

var hit : RaycastHit;

var mainGameScript : MainGame;

var particles_splash : GameObject;

function Awake () {
rigidbody.AddForce(4, 4, 0, ForceMode.Impulse);

InvokeRepeating("IncreaseBallVelocity", 2, 2);
}

function Update() {
if (rigidbody.SweepTest(transform.forward, hit, 0.5))
    Debug.Log(hit.distance + "mts distance to obstacle");
if(transform.position.y < -3) {
    mainGameScript.GameOver();
    //Application.LoadLevel("Menu");
}
}

function IncreaseBallVelocity() {
rigidbody.velocity *= 1.05;
}

function OnCollisionEnter(collision : Collision) {
Instantiate(particles_splash, transform.position, transform.rotation);
}

EDITED added more info

1. Fixed Timestep = 0.02 Maximum Allowed Tir = 0.333
2. There is no difference between running the game in editor player and on Android
3. No. It looks OK when I set 0.01
4. My Paddle is Box Collider without Rigidbody, walls are the same
5. There are all in same layer (when speed is normal it all works) value in PhysicsManager are the default (same like in image) exept "Solver Interation Co..." = 50
6. No. When I change speed it pass other wall
7. I am using standard cube but I expand/shrink it to fit my screen and other objects, when I expand wall more then it's OK it bouncing
8. No. It's simple project simple example from Video http://www.youtube.com/watch?v=edfd1HJmKPY
9. I don't use gravity

Answer 1

See:

1. Similar SO Question
2. A community script that uses ray tracing to help manage fast objects
3. UnityAnswers post leading to the script in (2)

You could also try changing the fixed time step for physics. The smaller this value, the more times Unity calculates the physics of a scene. But be warned, making this value too small, say <= 0.005, will likely result in an unstable game, especially on a portable device.

The script above is best for bullets or small objects. You can manually force rigid body collisions tests:

public class example : MonoBehaviour {
    public RaycastHit hit;
    void Update() {
        if (rigidbody.SweepTest(transform.forward, out hit, 10))
            Debug.Log(hit.distance + "mts distance to obstacle");

    }
}