We have a RadScheduler Website in Timeline View (same problems occur in Week View), with many resources.
If you open the website in Safari or Firefox, it works perfectly fast, but
if you open the site in IE (IE 6, IE 7, IE 8, IE 9) the client performance has a massive break down.
if move the mouse over the scheduler, to see the hover of timeslots or tooltip of appointments,
IE will stuck and began to react very slow. the client CPU usage for the IE process will move up to 100%.
You can test this with a live link of our application
I already checked the suggestion in http://www.telerik.com/products/aspnet-ajax/resources/top-performance.aspx, but it's not helping much.
Can you please urgently have a look at this, this is a production stop for our application !