Tweaking Asp.Net Performance 2
1.On iis6, enable the Compress Static files. Web Folder Porperties->Service->Compress Static FIles.
this will cut the download java script files and etc which your page download by half size.
2.Set loadscript before ui to false on every scriptmanager , declare directly to use scriptmode=release which make the ajax use the most optimized script
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true"
LoadScriptsBeforeUI="false" ScriptMode="Release">
3.Load you control object by javascript.
4.Cache the static page