QWebView low FPS rate

[matteo]

Hi, I'm new to qt, right now i'm using qt creator 3.1.0 based on qt 5.2.1. I'm trying to display an html page containing the "Cesium ":http://cesiumjs.org/ globe written in javascript using WebGL features.
I'm facing with fluency issues since that my application can't reach the 60 FPS rate reached with the chrome browser.
I have tried to to use both QWebView and QGraphicsWebView and to load in the page both my html file from qrc and a page directly from the internet like this one: http://cesiumjs.org/Cesium/Build/Apps/CesiumViewer/index.html
(loading directly from internet the application freezes).
Here there is my code:

@#include <QApplication>
#include <QWebView>
#include <QWebPage>
#include <QGraphicsView>
#include <QGraphicsWebView>
#include <QGLWidget>

int main(int argc, char *argv[])
{
QApplication a(argc, argv);

int width = 1500;
int height = 900;

/*  
//using QWebView
QWebSettings::globalSettings()->setAttribute(QWebSettings::AcceleratedCompositingEnabled, true);
QWebSettings::globalSettings()->setAttribute(QWebSettings::WebGLEnabled, true);
QWebView *webView = new QWebView();
webView->load(QUrl("qrc:/Resources/NewFile.html"));
//webView->load(QUrl("http://cesiumjs.org/Cesium/Build/Apps/CesiumViewer/index.html"));
webView->resize(width, height);
webView->show();
*/


//using QGraphicsWebView
QGraphicsView *gview;
QGraphicsScene *scene;
QGraphicsWebView *web_view;

QWebSettings::globalSettings()->setAttribute(QWebSettings::AcceleratedCompositingEnabled, true);
QWebSettings::globalSettings()->setAttribute(QWebSettings::WebGLEnabled, true);
gview = new QGraphicsView();
gview->setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
gview->setViewport(new QGLWidget());

scene = new QGraphicsScene(gview);
web_view = new QGraphicsWebView();

scene->addItem(web_view);
gview->setScene(scene);

web_view->load(QUrl("qrc:/Resources/NewFile.html"));
//web_view->load(QUrl("http://cesiumjs.org/Cesium/Build/Apps/CesiumViewer/index.html"));

web_view->resize(width, height);
gview->resize(width+50, height+50);
gview->show();

return a.exec();

}@

I don't now if that issue depends on the javascript engine used by qt, or if there is the possibility to built qt for a specific machine in order to get better results, or even more i'm dealing wrong with the settings of my application. I'm just supposing.

Any ideas or suggestings?
Thanks in advance.

[kmbar2013]

Was there ever a resolution to this?