Please, let me shed some light on the dicussed problem.
Leonid, we suggested to set debug=false because this for sure reduces the time the scripts need to execute. Even if it did not solve the problem it has improved the performance and probably there is an additional reason for the issue. However, in the mentioned support thread at last we have sent you a video capture of the results on our side and we never get any feedback, video capture, information, details, etc from you and that is why we could not know whether you fixed the problem or there is further investigation needed and if so, there was no available additional information from you to base it on. Furthermore, in the other thread the significant slowing down came from your custom skin and after we disabled it we could not reproduce the described big delay as shown in the attached video capture there.
Stuart, what we can suggest you that might solve the problem is the following:
- Upgrade to the latest version of RadControls if you haven't - the performance is continuously improved and it is possible that it is better in this version compared to an older one.
- Set debug="false" in the Web.config file.
- Reduce the HTML contained in the splitter as much as possible - e.g enable paging for the grid, etc.
- Use AJAX where possible.
the Telerik team