Element {0} is using the most CPU. This could be caused by expanding the template, UI virtualization or because of many visual ...

Element {0} is using the most CPU. This could be caused by expanding the template, UI virtualization or because of many visual tree changes. This is causing the frame rate to be inconsistent. 

Go to the Performance Warnings menu in the navigation toolbar and select the Frames view. Sort the frames by clicking the CPU Time column header and select the frames with the highest CPU time. From the Frames view, select the Visual Tree option and identify CPU usage for visual {0} in and other elements in the tree.