Dolphin running games slow

[Barbecuesaus]

Hi

I been trying to get to run mario kart on Dolphin to run smooth.

Id like to get some help on how to get games to run smooth on this emulator.

Here are my system specs :

I7 CPU Q720
Ram 6,00 1333mhz
Win 7 64 bit
Ati Radeon mobility 5470 1gb

I wonder if the i7 brings the problems but thats just speculating, i hope anybody can help me setup Dolphin properly

Ps, i already followed the Performance Guide without succes.