Ralentissement application lors d'un touch event AS3 Air for Android

Hello,

I have a problem with development of a little game for Android with Animate CC.

I have a scrolling background with platforms and a button with "touch event". Every time i click on the button, the game become slow for 1 seconde even if the function 'touch event" is empty. This is just the touch which make the game slowly.

In PC the game works perfectly.

This is my script :

// Code pour le défilement du parcours

MyBackground.addEventListener(Event.ENTER_FRAME, defiler);

function defiler(e:Event)

{

  MyBackground.x-=5;

}

// Code bu bouton

MyButton.addEventListener(TouchEvent.TOUCH_TAP,jump);

function jump(e:Event)

{

}

Thanks pour your help !