Does anyone have experience with the following issue? Are there any known workarounds?
Official MS Statement: General overhead performance differences when you view reports in SharePoint integrated mode versus in SharePoint native mode: http://support.microsoft.com/kb/2216504
Furthermore, the performance of individual reports viewed using the ASP.NET Ajax-enabled Report Viewer web part in SharePoint 2010 degrades significantly when there are multiple viewers on a single web page, the viewer generates very large HTML, and the web page is viewed using older browsers.
“This performance problem seems to be particularly noticeable on pages with a larger number of valid values in a parameter, a large report page, or multiple viewers (or web parts) on a single page“