QPrinter with QtWebengine is created with High Resolution it freezes application for a while.

void BrowserMainWindow::printRequested(QWebEnginePage *page)
{
    if (m_currentPrinter)
        return;
 -   m_currentPrinter = new QPrinter();
 +   m_currentPrinter = new QPrinter(QPrinter::HighResolution); 

    QScopedPointer<QPrintDialog> dialog(new QPrintDialog(m_currentPrinter, this));
    dialog->setWindowTitle(tr("Print Document"));
    if (dialog->exec() != QDialog::Accepted) {
        slotHandlePagePrinted(false);
        return;
    }
    page->print(m_currentPrinter, invoke(this, &BrowserMainWindow::slotHandlePagePrinted));
}