SharePoint 2010 RDLC Report issue

Hi All,

I am using RDLC report in SP 2010 to generate report. The report is working fine if the data is less. For larger data after clicking on the pdf button the report page is loading more than one hour after that

nothing is happening.

I have increased the time out value in web config to 9000 sec. Still the same issue.

Can you please help.