WebCamTexture, correct resolution and RATIO.And FPS

Video acquisition via WebCamTexture is extremely slow (less than 3 FPS) in 1200*760 on a moto G2 Android one, which should be capable of better performances…
Any idea guys to improve it? I’m under Unity 5.0.1.
I’ve tried to play with different _requestedFPS but it didn’t help.

After searching for a while, I’ve find different solutions

http://forum.unity3d.com/threads/extremely-poor-webcamtexture-performances-under-android-in-high-resolution.221862/
Here is the little code I’ve used for testing:

public class CameraController : MonoBehaviour
{
   public WebCamTexture mCamera = null;
   public Transform plane;
   void Start ()
   {
	mCamera = new WebCamTexture ( 1280,720,30);
	plane.GetComponent<Renderer>().material.mainTexture=mCamera;
	mCamera.Play ();
   }
}

I’ve ran into the same problem as you, before.
For some reason, WebCamTexture has a very poor performance on Android, unless you use the default contructor:

mCamera = new WebCamTexture();