Slow BoxFactory

[teraki343]

Hi

I am using CSSBox for extracting info about size/positions of html elements on websites. For that purpose, I am using BoxFactory class but it is very slow. It takes around 2-3 second to generate Viewport for pages that does not have so much content. For example:
https://www.pracuj.pl/praca/senior-data-specialist-krakow,oferta,6303360 - takes around 4-5 seconds to generate Viewport.

Is there any way to make it faster?

` public static void main(String[] args) throws IOException, SAXException {

    String url = "https://www.pracuj.pl/praca/senior-data-specialist-krakow,oferta,6303360";


    Instant start = Instant.now();
    DocumentSource docSource = new DefaultDocumentSource(url);
    DOMSource parser = new DefaultDOMSource(docSource);
    Document doc = parser.parse();

    Instant finish = Instant.now();
    System.out.println("Parser " + (Duration.between(finish, start).toMillis()));

    start = Instant.now();
    DOMAnalyzer da = new DOMAnalyzer(doc, docSource.getURL());
    da.attributesToStyles();
    da.addStyleSheet((URL) null, CSSNorm.stdStyleSheet(), DOMAnalyzer.Origin.AGENT);
    da.addStyleSheet((URL) null, CSSNorm.userStyleSheet(), DOMAnalyzer.Origin.AGENT);
    da.getStyleSheets();
    finish = Instant.now();
    System.out.println("Styles " + (Duration.between(finish, start).toMillis()));


    start = Instant.now();
    BoxFactory boxFactory = new BoxFactory(da, docSource.getURL());
    BrowserConfig config = new BrowserConfig();
    config.setLoadBackgroundImages(false);
    config.setLoadImages(false);
    boxFactory.setConfig(config);
    boxFactory.reset();
    finish = Instant.now();
    System.out.println("Factory init " + (Duration.between(finish, start).toMillis()));

    VisualContext ctx = new VisualContext(null, boxFactory);
    start = Instant.now();

    Viewport viewport = boxFactory.createViewportTree(da.getRoot(), new BufferedImage(1000, 600, 1).createGraphics(), ctx, 1000, 600);

    finish = Instant.now();
    System.out.println("Factory run " + (Duration.between(finish, start).toMillis()));

    viewport.initSubtree();
    viewport.doLayout(600, true, true);


}`

Thanks.