Android with physics statics objets

Hi,
I make a game with rounds objects (circle collision) wich falling by the native fusion physic engine. My game work fine on Html5 and Windows exporters but it's very slow on Android.
I wasd tested my game with Samsung Galaxy 2 and Nexus 5.

Do you know if the physics runs more faster with the next update ? Or what I need to do for optimize my game ?

For info this a vidéo of my game: https://www.youtube.com/watch?v=A9Pg6y4uqtA

Thanks for your answers.

What build are you running?
You can try the latest beta in the product owners lounge and see how it runs.

If its still slower then HTML5 or Windows -- Fernando might have to take a look at it and see whats going on.

OK I try with the new build and it's run very well ! I'm happy :)
Thank you.