Thank you for writing.
I have been testing with several versions and I have been able to reproduce the performance problem with the PropertySort.CategorizedAlphabetical
. This problem is reproducible since Q3 2013 SP1 (version 2013.3.1127). I have logged it in our Feedback Portal
. You can track its progress, subscribe for status changes and add your vote/comment to it on the following link - Feedback Item
I have also updated your Telerik points
Currently, due to the specificity of the issue I am unable to suggest a suitable solution.
I hope this information helps. Should you have further questions, I would be glad to help.
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