PerformancePoint webpart showing report from Reporting Service, but is showing cached content!

I am using sharepoint 2010. I have created some reporting service report. On some page, I have created the PerformancePoint webpart to show the reporting service report. It works and shows content. But when I change the data and go again to the page with the performancePoint webpart, it shows the old content. It looks like it shows the cached content. When I open this page on another tab I have the same issue. When open a private session it works fine, I can see the latest content.

It looks like there is some caching on the session.

How can I fix this reporting service caching issue?

ps. I have turned off the toolbar from this report