Telerik UI for Windows Phone by Progress

Realizing all the items in RadJumpList within the buffer can be a lengthy operation, so you can use the IsAsyncBalanceEnabled property to determine whether asynchronous balance is allowed. The control will internally schedule expensive operations like BringIntoView for asynchronous balance and realize item after item using dispatcher timer and off-loading the UI thread.

Use the BeginAsyncBalance method to manually schedule the next balance to come as asynchronous.