Performance/right usage of kendoComboBox

[OpServices]

Hello,
We've being  analysing kendo-ui before we buy it and we face what appears to be a performance issue(or not). As we are not costumers yet, we don't know if this is the right place to post this question, but here we go.

Attached to this thread there's a small html file that takes a quite long time to run despite its simplicity.
The questions are very simple:

1 - Are we using kendoComboBox in the wrong way?
2- There is a faster way to achieve the same result?
3- Is this performance considered normal?
4- If the answer for question 3 is `yes', do you have any guidelines to help us out to bypass these performance issues(number of elements per page, number of bindings per page etc)?

Ah, of course, it may be not a `performance issue' in other person point of view, so, when you read `performance issue' here, its our point of view :)
Despite that, neat library and great components.

[Alexander Popov]

Hello,

Thank you for the contacting us.
We would be happy to analyze the performance issue you are experiencing and answer your questions, however it looks like the example you mentioned is not attached. Please provide runnable project so we can advice you further.

Regards,
Alexander Popov
Telerik