Yiibooster Seems Slow

When I added Yiibooster library to my website, it seems to slow page loading. When I remove the Yiibooster files, it becomes fast again.

It is slow without using any Yiibooster components. when I click on 'Home', 'About, or 'Contact us' link, the page gets blanked "white" and loads after 2 seconds.

www.jrowser.com, my test site. This is on a dedicated server.

Any ideas?

Thx