try this and see if it changes anything for you:
1. Open your control panel.
2. click on network configurations(something like that)
3. click on internet settings shown at the bottom left of the window
4. Once you're in the internet properties, click the settings button of the browsing history and select the 'Never' option. Click OK.
5. Click the DELETE button next to the settings button you just clicked.
6. check the Cookies and the Temporary Internet Files boxes. Click the delete button.
7. After the deleting is done, go to the Security tab, click the Custom Level button, click the arrow button and choose the 'high' option, click the Reset button next. Click OK. Next click Apply, and the OK buttons, respectively.
8. Restart Internet Explorer by starting IE. Close it.
9. You're done, Start CF and see if your FPS increase by any notable way.