Hi again Jari,
Thanks for getting back to me on this, the control you posted looks pretty much similar to what I am testing this on except for the postback.
So the delay is not happening when you fire the OnChange event on the whole select control, but on the actual selection of items? And I would assume there are several items hidden that need to be scrolled to before being select?
I'll try looking into this again to see if there is anything else I can find, especially the items needing to be scrolled to with the scroll bar. If you can please continue with your implementation, we will look to support this scenario better in a future version of WebUI.
the Telerik team
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