My Level Take To much Time to Restart (c#)

Hello! My game is a 2D Platformer. When my player dies I restart the level using "Application.LoadedLevel" To load the same level. Sometimes it doesn't take more than 2 seconds to restart but sometimes it takes from 4 to 6 seconds to load the same level. I don't like that. I want to restart playing a second after I die (Theres NO gameover menu).

I searched for a way to load the level while I play with "Application.LoadLevelAsync" But I don't really know how to use it.

So if I use this code: using UnityEngine; using System.Collections;

 public class ExampleClass : MonoBehaviour {
     IEnumerator Start() {
         AsyncOperation async = Application.LoadLevelAsync("MyBigLevel");
         yield return async;
         Debug.Log("Loading complete");
     }
 }

It will Load "MyBigLevel" in the background? then How do I Start it if I die? "Application.LoadLevel??".

And If there's another way of reducing the time Reloading how is it?.

THANKS! :D