I am glad you notice improvements in RadRibbonBar performance.
The evaluation starts when you select "I agree" to the license agreement during installation. Evaluation period is not limited though, you may only see a trial message from time to time.
You need not send us a separate ticket about performance, except if you have further questions that you want to be answered in a separate thread. You should though open a support ticket where we can discuss non-evaluation license. Please review FAQ section on our website for more details on how to use the client.net support system.
the Telerik team
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