为什么会出现这种奇怪的抖动

我有一个场景，玩家可以在其中拾取和放下物体，以及移动和环顾四周。

所有玩家对象都是空游戏对象"MainCharacter"的子对象：

MainCharacter >
    Capsule (With RigidBody and PlayerMoveScript) >
        PlayerBase (empty - used for checking if grounded)
        MainCamera >
            Hands(With PickUpDrop script)

我把Lerps抱到我的手的位置，然而，在我的太空舱与任何墙壁碰撞后，都会有一种奇怪的抖动，我无法解决！！

下面是.exe:GameTest数据文件夹如下：data

以下是脚本：

取放脚本：

public bool handsFull = false;
    public float distanceMax = 20f;
    public Transform handPosition;
    public LayerMask canPickUp;
    public GameObject taggedGameObject;
    public bool colliderTriggered;
    public bool bounds;
    public PickedUpObject pickedUpScript;
    public Rigidbody player;
    // Use this for initialization
    void Start () {
        print(FindClosestPickup().name);
        handPosition = transform;
        pickedUpScript = null;
    }
    // Update is called once per frame
    void Update () {

                if (Input.GetKeyDown (KeyCode.E) && !bounds) {
                        if (Physics.CheckSphere (handPosition.position, 2f, canPickUp)) {
                                if (handsFull) {
                                        Drop ();
                                }
                                if (!handsFull) {
                                        PickedUp ();
                                }
                handsFull = !handsFull;
                        }
                }
                if (handsFull) {
                        RotateMovePickedUpObject();
                }   

        }

    private void PickedUp(){
        //Closest object to top of list
        taggedGameObject = (GameObject)FindClosestPickup();
        taggedGameObject.collider.isTrigger = true;

        taggedGameObject.rigidbody.useGravity = false;
        taggedGameObject.rigidbody.isKinematic = true;
        pickedUpScript = taggedGameObject.GetComponent<PickedUpObject> ();
        Debug.Log ("Pick Up");

    }
    private void RotateMovePickedUpObject(){
        //Rotate
        if(Input.GetKeyDown(KeyCode.End)){
            taggedGameObject.transform.localRotation *= Quaternion.Euler(0, 0, 45);
        }
        if(Input.GetKeyDown(KeyCode.Delete)){
            taggedGameObject.transform.localRotation *= Quaternion.Euler(0, 45, 0);
        }
        if(Input.GetKeyDown(KeyCode.PageDown)){
            taggedGameObject.transform.localRotation *= Quaternion.Euler(0, -45, 0);
        }
        if(Input.GetKeyDown(KeyCode.Home)){
            taggedGameObject.transform.localRotation *= Quaternion.Euler(0, 0, -45);
        }
        if(Input.GetKeyDown(KeyCode.PageUp)){
            taggedGameObject.transform.localRotation *= Quaternion.Euler(-45, 0, 0);
        }
        if(Input.GetKeyDown(KeyCode.Insert)){
            taggedGameObject.transform.localRotation *= Quaternion.Euler(45, 0, 0);
        }
        taggedGameObject.transform.position = Vector3.Lerp(taggedGameObject.transform.position, handPosition.position, (1 - Mathf.Exp( -20 * Time.smoothDeltaTime )) * 10);
    }

    private void Drop(){
        taggedGameObject.collider.isTrigger = false;
        taggedGameObject.rigidbody.useGravity = true;
        taggedGameObject.rigidbody.isKinematic = false;
        taggedGameObject = null;
        Debug.Log ("Drop");
        pickedUpScript = null;
    }
    private GameObject FindClosestPickup() {
        //Find closest gameobject with tag
        GameObject[] gos;
        gos = GameObject.FindGameObjectsWithTag("pickup");
        GameObject closest = null;
        float distance = Mathf.Infinity;
        Vector3 position = transform.position;
        foreach (GameObject go in gos) {
            Vector3 diff = go.transform.position - position;
            float curDistance = diff.sqrMagnitude;
            if (curDistance < distance) {
                closest = go;
                distance = curDistance;
            }
        }
        return closest;
    }
}

拾取对象脚本：

public PickUpDrop pickUpScript;
    public GameObject thisOne;
    public Color thecolor;
    public bool inObject;
    // Use this for initialization
    void Start () {
        thisOne = this.gameObject;
    }
    // Update is called once per frame
    void Update () 
    {
        thecolor = thisOne.renderer.material.color;
    if (pickUpScript.taggedGameObject != thisOne)
        {
            gameObject.renderer.material.color = Color.gray;
        }
    if (pickUpScript.taggedGameObject == thisOne)
        {
            Color color = renderer.material.color;
            color.a = 0.5f;
            renderer.material.color = color;
        }
    }
    void OnTriggerEnter ()
    {
        if (thisOne == pickUpScript.taggedGameObject)
        {
            inObject = true;
            pickUpScript.bounds = true;
            gameObject.renderer.material.color = Color.red;
        }
    }
    void OnTriggerExit()
    {
        if(thisOne == pickUpScript.taggedGameObject)
        {
            inObject = false;
            pickUpScript.bounds = false;
            gameObject.renderer.material.color = Color.gray;        
        }
    }
}

taggedGameObject.transform.position = Vector3.Lerp(taggedGameObject.transform.position, handPosition.position, (1 - Mathf.Exp( -20 * Time.smoothDeltaTime )) * 10);

taggedGameObject.rigidbody.AddForce( ( taggedGameObject.transform.position - handPosition.position ) * force );