Hello,
Dependent on the functionality that the Kendo UI Grid has (e.g. selectable, navigatable, groupable, editors in the column templates), there may be some performance issues. Internet Explorer is particularly the one that clients report as causing issues. Here is a similar forum thread which mentions the same behaviour:
https://www.telerik.com/forums/ie11-selection-slow-performance-250-rows
If you are able to share a little more of the exact implementation, I can check if there is anything else that may be slowing the performance down. Can you share the grid configuration and any custom handlers as well as which browser causes poor performance?
Finally, we have published a blog post earlier this year that you may find useful on the Kendo UI Grid performance at:
https://www.telerik.com/blogs/how-to-get-the-best-grid-performance
In case you are not able to apply the suggestions in the article, you could do some browser sniffing and handle mouse down events on the grid to execute your custom logic instead.
Let me know if this suggestion is applicable, if not please provide some more details on the desired outcome.
Kind Regards,
Alex Hajigeorgieva
Progress Telerik
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