I have a simple program that allows me to drag a circle around a scene. I'm not sure if I'm doing something wrong but the circle always seems to lag the position of the mouse. It just feels wrong.

This is using Java 8 build b117 and happens on both Windows 7 64bit and Linux 64bit.

To reproduce run the code below and drag the circle about quite quickly.

Here is the code:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.FlowPane;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;

public class DragTest extends Application {
    @Override
    public void start(Stage stage) throws Exception {
        FlowPane flowPane = new FlowPane();
        Scene scene = new Scene(flowPane, 500, 500);
        stage.setScene(scene);
        double circleRadius = 20;
        Circle circle = new Circle(circleRadius);
        circle.setOnMouseDragged(mouseEvent -> {
            circle.setTranslateX(mouseEvent.getSceneX() - circleRadius);
            circle.setTranslateY(mouseEvent.getSceneY() - circleRadius);
        });
        flowPane.getChildren().add(circle);
        stage.show();
    }

    public static void main(String[] args) {
        Application.launch(args);
    }
}