FULL PRODUCT VERSION :
java version "1.8.0_112"
Java(TM) SE Runtime Environment (build 1.8.0_112-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.112-b15, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 10.0.10586]

EXTRA RELEVANT SYSTEM CONFIGURATION :
Intel core i5-6600 CPU @ 3.30GHz
16.0 GB RAM
Intel HD graphics 530

A DESCRIPTION OF THE PROBLEM :
We need to display a StackedBarChart with more than 100 bars. Chart wrapped in a ScrollPane for the possibility scroll through the X-axis (CategoryAxis). When adding a large amounts of data (approximately 100 bars on the screen), the UI begin to freeze. (See attached Source Code to reproduce the problem).

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1) Run attached source code.
2) Click 'Fill data' button
3) Try to scroll chart.

The more data, the more freezes.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Scrolling without any freezes.
ACTUAL -
Strong UI freeze when trying to scroll the chart

ERROR MESSAGES/STACK TRACES THAT OCCUR :
No crash appears, it is a performance issue.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;
import javafx.scene.Scene;
import javafx.scene.chart.CategoryAxis;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.StackedBarChart;
import javafx.scene.chart.XYChart;
import javafx.scene.control.Button;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;

public class StackedBarChartSample {

    static XYChart.Series<String, Number> series1;
    static XYChart.Series<String, Number> series2;
    static XYChart.Series<String, Number> series3;
    static StackedBarChart sbc;
    static CategoryAxis xAxis;
    private static final int BAR_WIDTH = 40;
    private static final int BAR_MARGIN = 40;
    private static ScrollPane scrollPane;

    private static void initChart() {
        Stage stage = new Stage();
        stage.setTitle("Bar Chart Sample");

        xAxis = new CategoryAxis();
        xAxis.setStartMargin(0);
        xAxis.setEndMargin(500);
        NumberAxis yAxis = new NumberAxis();
        xAxis.setLabel("Value X");
        yAxis.setLabel("Value Y");

        sbc = new StackedBarChart(xAxis, yAxis);
        sbc.setLegendVisible(true);

        series1 = new XYChart.Series<>();
        series2 = new XYChart.Series<>();
        series3 = new XYChart.Series<>();
        xAxis.setTickMarkVisible(true);
        xAxis.setTickLabelsVisible(true);

        sbc.getData().addAll(series1, series2, series3);
        sbc.setAnimated(false);
        yAxis.setAnimated(false);
        xAxis.setAnimated(false);
        sbc.setCache(true);

        xAxis.categorySpacingProperty().addListener((observable, oldValue, newValue) -> setMaxCategoryWidth());

        scrollPane = new ScrollPane();
        scrollPane.setContent(sbc);
        scrollPane.setFitToHeight(true);

        HBox toolbar = new HBox();

        TextField field = new TextField("200");
        Button clear = new Button("Clear");
        clear.setOnAction(event -> clearChart());

        Button fill = new Button("Fill data");
        fill.setOnAction(event -> fillData(field.getText()));
        toolbar.getChildren().addAll(clear, field, fill);

        BorderPane pane = new BorderPane();
        pane.setBottom(toolbar);
        pane.setCenter(scrollPane);
        Scene scene = new Scene(pane, 500, 500);
        stage.setScene(scene);
        stage.show();
    }

    public static void main(String[] args) {
        new JFXPanel();
        Platform.runLater(() -> initChart());
    }

    private static void clearChart() {
        scrollPane.setFitToWidth(true);
        sbc.getData().remove(0, sbc.getData().size());
        series1 = new XYChart.Series<>();
        series2 = new XYChart.Series<>();
        series3 = new XYChart.Series<>();
        sbc.getData().addAll(series1, series2, series3);
    }

    private static void fillData(String count) {
        for (int i = 0; i < Integer.parseInt(count); i++) {
            String name = new Double(Math.random()).toString();
            series1.getData().add(new XYChart.Data<>(name, Math.random()));
            series2.getData().add(new XYChart.Data<>(name, Math.random()));
            series3.getData().add(new XYChart.Data<>(name, Math.random()));
        }
    }

    private static void setMaxCategoryWidth() {
        Platform.runLater(() -> {
            double catSpace = xAxis.getCategorySpacing();
            if ((catSpace - sbc.getCategoryGap()) < BAR_WIDTH && !isChartEmpty() && ((sbc.getWidth() / series1.getData().size()) * 0.8 < BAR_WIDTH + BAR_MARGIN)) {
                scrollPane.setFitToWidth(false);
                sbc.setPrefWidth(sbc.getWidth() + 200);
            }
            double gap = catSpace - Math.min(BAR_WIDTH, catSpace - BAR_MARGIN);
            if (!Double.isNaN(gap) && !Double.isInfinite(gap) && gap > 0) {
                sbc.setCategoryGap(gap);
            }
        });
    }

    static boolean isChartEmpty() {
        return series1.getData().isEmpty() && series2.getData().isEmpty() && series3.getData().isEmpty();
    }
}


---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Decreasing the minimum width of the bar allows increase the amount of data that you can dispaly and scroll without freezing