Games running at half speed!

[miamizinfamous]

Hey all, I'm new to the wii community and cannot get any games I've played to run at anything faster than half speed. I've followed the guidelines stickied in this thread and have played around a bit with the settings but no luck.

I'm running an Intel i7 (8 cores at 2.93 GHz) with 8 gigs of ram and an ati radeon 5400 series gfx card. Can someone please help me out?

Games I have tested so far are Mario Kart Wii, Mario Kart Double Dash (Gamecube) Mario Tennis and the new Super Mario Bros for Wii.

Thanks for the help guys!