Metroid Prime fps problem, my specs.

[Mexiun]

Hello, i've been searching all over the place for fps fixes with the config in Dolphin, i've managed to make the game run smoother, but whenever i open a door or shoot my game goes choppy for a second.
I've been stressing out for 30 minutes now trying to change every config and restarting the game over and over again but it doesnt work.
Now i can play Wario World perfectly on the emulator, but Metroid Prime is slightly lagging.

My specs:

Windows 7
Processor: Inter ® Core™ i5-4670 CPU @ 3.40GHz 3.40 GHz
Installed RAM: 8,00 GB
Type: 64 bits

Now im not sure if this is all i need to post, i also have the newest Nvidia installed and the newest (today) Dolphin.

Thanks.