Ragdoll : slight pause before it starts?

Hi,

i am using a ragdoll on my ZTE Android 2.2, it works fine, except that just before the ragdoll starts to fall down : there is a slight pause for about 1 second or less. But then, the ragdoll works fine.
I thought the problem came from the loading, so i loaded an instance of my prefab first, in the function "Start", i waited a bit and triggered the ragdoll. But same result. Do you think it is because of my device? Or because of the ragdoll itself on mobile?

I have one character : 1800 faces, 25 bones
and then i instantiate a light version for the ragdoll : 1200 faces, still 25 bones
Would you know any tip to make this work without this slight pause?

Here is the code i am using :

 private var instance : GameObject;
 private var instanceT : Transform;
 
 function Start () {
     instance = Instantiate(Resources.Load("runpref"));
     instanceT = instance.GetComponent(Transform);
 }
 
 function Detonate () {
     Destroy(gameObject);
 
     if (instance) {
         CopyTransformsRecurse(transform, instanceT);
     }
 }
 
 static function CopyTransformsRecurse (src : Transform,  dst : Transform) {
     dst.transform.position = src.position;
     dst.transform.rotation = src.rotation;
     
     for (var child : Transform in dst) {
         // Match the transform with the same name
         var curSrc = src.Find(child.name);
         if (curSrc)
             CopyTransformsRecurse(curSrc, child);
     }
 }

 function Update () {
     if ((Input.touchCount > 0) || Input.GetKey("z")){ 
         Detonate();
     }
 }

Thanks a lot