[REG 6.6 -> 6.7] Web Engine is very slow on software backend

#include <QApplication>
#include <QWebEngineView>
#include <QQuickView>

int main(int argc, char *argv[])
{
    QQuickView::setGraphicsApi(QSGRendererInterface::Software);
    QApplication::setAttribute(Qt::AA_ForceRasterWidgets);

    QApplication a(argc, argv);

    QWebEngineView w;
    w.setUrl(QUrl("https://www.google.com/search?q=qt+6.7"));
    w.showMaximized();

    return a.exec();
}