Unity 2D Shaking Player With Camera Damping

Unity Engine
1

Hi
Desclaimer: sorry for my english,i’m italian.
I have a problem with this script:

using UnityEngine;
using System.Collections;

public class Camera2DFollow : MonoBehaviour {
   
    public Transform target;
    public float damping = 1;
    public float lookAheadFactor = 3;
    public float lookAheadReturnSpeed = 0.5f;
    public float lookAheadMoveThreshold = 0.1f;
   
    float offsetZ;
    Vector3 lastTargetPosition;
    Vector3 currentVelocity;
    Vector3 lookAheadPos;
   
    // Use this for initialization
    void Start () {
        lastTargetPosition = target.position;
        offsetZ = (transform.position - target.position).z;
        transform.parent = null;
    }
   
    // Update is called once per frame
    void LateUpdate () {
       
        // only update lookahead pos if accelerating or changed direction
        float xMoveDelta = (target.position - lastTargetPosition).x;

        bool updateLookAheadTarget = Mathf.Abs(xMoveDelta) > lookAheadMoveThreshold;

        if (updateLookAheadTarget) {
            lookAheadPos = lookAheadFactor * Vector3.right * Mathf.Sign(xMoveDelta);
        } else {
            lookAheadPos = Vector3.MoveTowards(lookAheadPos, Vector3.zero, Time.deltaTime * lookAheadReturnSpeed);   
        }
       
        Vector3 aheadTargetPos = target.position + lookAheadPos + Vector3.forward * offsetZ;
        Vector3 newPos = Vector3.SmoothDamp(transform.position, aheadTargetPos, ref currentVelocity, damping);
       
        transform.position = newPos;
       
        lastTargetPosition = target.position;       
    }
}

The problem are this,when i add the script in the main camera if i set damping to 0 there are not problem but if damping is greater than 0 in play the player when it moves shaking.
who is the problem?
for see the problem download this build:

Thanks

2

Someone that help me?