Hi John Zeweniuk,
Generally, it is normal to experience some performance issues when you are using a large number of controls since controls are heavy objects and it may be time consiming to create many instances at once. It will be better if you cache instances and reuse them when needed. Still, we are not sure what may cause a delay of 5 seconds on your side. Therefore, I would kindly ask you to send us a project which demonstrates the performance issues. This will allow us to investigate your case and suggest perorformance optimizations if such are available.
the Telerik team
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