Performance Issues with the Telerik Dropdown

It seems there are some rendering performance issues with the Telerik drop down, but I was able to find a fix on one of the Telerik blogs. It is an older post and the namespace on the controls is not what is default now, but it still works. It is basically changing out the embedded control that is used for rendering from a RadComboBoxItem to a virtual stack panel. It took the performance I was seeing from unacceptable to instant.

You can read more here: http://blogs.telerik.com/valerihristov/posts/09-10-28/virtualized_telerik_combobox_for_silverlight.aspx