When I have a simple animation of a circle moving across the screen I get "jerks" about every 0.5 seconds.

Here is the code:

import javafx.animation.Interpolator;
import javafx.animation.TranslateTransition;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
import javafx.util.Duration;
 
public class SmoothMovementTest extends Application {
    @Override
    public void start(Stage stage) throws Exception {
        Group root = new Group();
        Scene scene = new Scene(root, 800, 400, Color.WHITE);
        stage.setScene(scene);
 
        Circle circle = new Circle(50.0, Color.RED);
        circle.setCenterX(50.0);
        circle.setCenterY(200.0);
        root.getChildren().add(circle);
 
        TranslateTransition transition = new TranslateTransition(new Duration(5000.0), circle);
        transition.setToX(700.0);
        transition.setAutoReverse(true);
        transition.setCycleCount(10);
        transition.setInterpolator(Interpolator.LINEAR);
 
        stage.setVisible(true);
 
        transition.playFromStart();
    }
 
    public static void main(String[] args) {
        Application.launch(args);
    }
}

and here is some debug info:

Prism pipeline init order: d3d j2d 
Using openpisces for shapes, t2k for text rasterization
Using dirty region optimizations
Prism pipeline name = com.sun.prism.d3d.D3DPipeline
(X)(1) D3D loading native lib
prism-d3d loaded.
[I] OS Version = OS_WINXP Pro
(I) CheckAdaptersInfo
(I) ------------------
(I) Adapter Ordinal  : 0
(I) Adapter Handle   : 0x10001
(I) Description      : NVIDIA GeForce 8400 GS   
(I) GDI Name, Driver : \\.\DISPLAY1, nv4_disp.dll
(I) Vendor Id        : 0x10de
(I) Device Id        : 0x06e4
(I) SubSys Id        : 0x0
(I) Driver Version   : 6.14.11.8250
[I] GUID             : {D7B71E3E-45A4-11CF-8A43-0B2000C2CB35}
(I) D3DPPLM::CheckDeviceCaps: adapter 0: Passed
(I) ------------------
(I) Adapter Ordinal  : 1
(I) Adapter Handle   : 0x10003
(I) Description      : NVIDIA GeForce 8400 GS   
(I) GDI Name, Driver : \\.\DISPLAY3, nv4_disp.dll
(I) Vendor Id        : 0x10de
(I) Device Id        : 0x06e4
(I) SubSys Id        : 0x0
(I) Driver Version   : 6.14.11.8250
[I] GUID             : {D7B71E3E-45A4-11CF-8A43-0B2000C2CB35}
(I) D3DPPLM::CheckDeviceCaps: adapter 1: Passed
(I) ------------------
(X)d3dEnabled =true
(X) Got class = class com.sun.prism.d3d.D3DPipeline
D3DPipeline:getInstance(), d3dEnabled=true
Initialized prism pipeline: com.sun.prism.d3d.D3DPipeline
JavaFX: using com.sun.javafx.tk.quantum.QuantumToolkit
RESIZE: 811590258988782 w: 800 h: 400
(I) D3DContext::InitContext device 0
(I) D3DContext::ConfigureContext device 0
(I) D3DContext::ConfigureContext: successfully created device: 0
(I) D3DContext::InitDevice: device 0
(I) D3DContext::InitDevice: successfully initialized device 0
QuantumRenderer: shutdown
(E) call to JavaD3DResourceFactoryDummy