efficient javafx fadetransition

Question

I have a large amount of nodes and currently using fade trasition code below,

ft1 = new FadeTransition(Duration.millis(500), hBox_outter_last);
                                       ft1.setFromValue(1.0);
                                        ft1.setToValue(0.3);
                                        ft1.setCycleCount(Animation.INDEFINITE);
                                        ft1.setAutoReverse(true);
                                       ft1.play();

however this is CPU consuming and was told that I can use the following, however this does not work, anyone can help with this

DoubleProperty opacity = new SimpleDoubleProperty();
Transition opacityTransition = new Transition() {
    protected void interpolate(double frac) {
        opacity.set(frac);
    }
};

// elsewhere
hBox_outter_last.opacityProperty().bind(opacity);

Answer 1

You also need to set the cycleDuration (and I assume you are calling play() somewhere...):

Transition opacityTransition = new Transition() {
    {
        setCycleDuration(Duration.seconds(1));
    }
    protected void interpolate(double frac) {
        opacity.set(frac);
    }
};

If that doesn't fix it, please post an MCVE