@Override
    public void setLostFocusBehavior(LostFocusBehavior lostFocusBehavior) {
        this.lostFocusBehavior = lostFocusBehavior;
    }
Change the application's behavior when unfocused. By default, the application will
{@link LostFocusBehavior#ThrottleOnLostFocus throttle the update loop}
so as to not take 100% CPU usage when it is not in focus, e.g.
alt-tabbed, minimized, or obstructed by another window.

@param lostFocusBehavior The new {@link LostFocusBehavior lost focus behavior} to use.
jme3-vr/src/main/java/com/jme3/app/VRApplication.java