A DESCRIPTION OF THE PROBLEM :
Rendering stroked text with StrokeType.OUTSIDE remains extremely slow, leading to high CPU usage, UI lag, and complete unresponsiveness, especially with multiple text instances. This longstanding issue (related to JDK-8089081) persists in recent JDK versions, crippling applications that rely on outlined text for accessibility or visual design.

In my commercial application (basically a text-slide-presenter) app I desperately need StrokeType.OUTSIDE on the Text because my client strongly dislikes the default StrokeType.CENTERED behaviour. However the app becomes completely unusable and unresponsive when this stroke-type is applied. This isn't just "slow"—it's a showstopper for production apps.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Render multiple javafx.scene.text.Text nodes (e.g in a scrollpane). Set the stroke type of the texts to "outside": text.setStrokeType(StrokeType.OUTSIDE).

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Smooth scrolling and rendering, comparable to StrokeType.CENTERED.
ACTUAL -
Immediate lag on scroll init; freezes after 2–3 pans with >10 labels. CPU-bound on render thread.

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import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.ScrollPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.StrokeType;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class StrokeLagDemo extends Application {
    @Override
    public void start(Stage stage) {
        VBox vbox = new VBox(5);
        for (int i = 0; i < 50; i++) { // Simulate list; lag worsens with count
            Text text = new Text("Dynamic Text Item " + i + " - Scroll to reproduce lag");
            text.setFill(Color.WHITE);
            text.setStroke(Color.GRAY);
            text.setStrokeWidth(1.0);
            text.setFont(Font.font(16));
            text.setStrokeType(StrokeType.OUTSIDE); // triggers bug
            vbox.getChildren().add(text);
        }

        ScrollPane scroll = new ScrollPane(vbox);
        scroll.setPrefSize(400, 300);

        Scene scene = new Scene(scroll);
        stage.setScene(scene);
        stage.setTitle("StrokeType.OUTSIDE Lag Demo");
        stage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}
---------- END SOURCE ----------