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Hi!

The new component SfDropDownTree just released with version 24.1.41 (Blazor WASM). It is in preview so I understand if there are issues. But I want to report that its performance is quite slow for a medium amount of data. 

I have a list of almost 200 items (in a tree of 4 levels) that I'm loading into the DropDownTreeField, with a mapping between the items using the ID, HasChildren and ParentID properties. It takes 2-5 seconds to do anything: opening the dropdown tree, expanding a parent item, or selecting any item. I tried setting LoadOnDemand="true" on the SfDropDownTree, but it only became a little bit better.

It also affects other components in the same form. I tested SfCheckBox which now takes a few seconds to check/uncheck because of the SfDropdownTree in the same form.

I attach some code snippets and two GIFs:

- File 1: Razor code snippet of the form.
- File 2: Code behind snippet of the form.
- File 3: An animated GIF showing the worse performance with the new SfDropDownTree.
- File 4: An animated GIF showing the normal performance without the new SfDropDownTree.

Sincerely,

Andreas