Thank you for writing.
The following Knowledge Base article demonstrates some performance tips when using the Telerik UI for WinForms suite: http://www.telerik.com/support/kb/winforms/details/performance-considerations
However, the provided information is not enough for me to replicate the performance issue that you are facing. Could you please specify the exact steps how to reproduce the problem or get back to me with a sample project so I can investigate the precise case? Feel free to attach the project in
the support ticket that you have opened on the same topic. Thank you.
I am looking forward to your reply.
Telerik by Progress
Check out the Windows Forms project converter, which aids the conversion process from standard Windows Forms applications written in C# or VB to Telerik UI for WinForms.For more information check out this blog post
and share your thoughts.