Slow page loading due to big number of webparts

Hi,

I'm making a Scorecard application with Sharepoint 2010 and PerformancePoint Services.

I had to add a big number of web parts to a sharepoint site page which hide / show as I press KPI's of a PPS Scorecard. Because lot's of items are hidden then my page takes around 10 seconds to show up which is quite noticeable to the users.

How can I increase loading performance for this case? Warming up the cache doesn't seem to work because when I try to enter the site again pressing the navigation bar, it takes the same 10 seconds to load the page again.

Thank you