My suggestion would be to take a look at RadChartView
. It has been designed to address some of the limitations and issues in RadChart, including performance. You can find a detailed comparison in this help topic
. I would suggest giving it a try and if the problem with decreasing performance remains -- please, send us more details about the control configuration, data etc.
the Telerik team
Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get it now >>