Just want to make aware that I personally have had serious performance issues using firstly Telerik MVC Menu and now Kendo UI MVC Menu. It would usually take 2000-3000ms to render the menu. This occured over 3 seperate projects. I have since removed the menu and created a basic custom version to save 2000-3000ms loading times. These loading times were especially very noticable running on Windows Azure Web Role instances.