Android : Why does android requests a full redraw after a touch event, but only on a ARM device and not on a x86

I use the JUCE framework and have a strange performance issue on my Android ARM device, but not on a x86 test dev.

Problem: When I touch the screen on the ARM test device, android requests a full redraw for the whole UI (canvas size == desktop::width x desktop::height) without invalidate any area on the UI from my side. But the same code doesn't do it on the x86 device! This full redraw takes a long time (~300ms) and the ui feels very sluggish.

File: app.java

public final class MyCustomView extends ViewGroup
{
    // ...
    @Override
    public void onDraw (Canvas canvas)
    {
        // The canvas size is here == deskto::width X ::height
        // after a onTouch MotionEvent.ACTION_DOWN on the ARM test dev

        // This method calls C++ rendering code
    }

    @Override
    public boolean onTouchEvent (MotionEvent event)
    {
        // ...
    }
}

I do not understand why android handles the same thing different on different architectures. Could it be just a device setting? Any idea?

Thanks