Emulator

Metroid Prime ID:GM8E01

Problem: When firing Samus's gun rapidly the game crawls to a slow at around 50% speed.

Steps that cause this: Firing Rapidly, enemies firing or being in an area where there are generally a lot of effects going on.

Dolphin version r7671 64bit

System information:
Intel i7 950 3.07ghz
ASUS P6X58D-E
Sapphire HD 6950 2GB
x4 OCZ DDR3 2GB 1600ghz
OCZ Vertex 2 60gb SSD (Dolphin location)
Samsung 500gb HDD (Game location)

Other notes:
Ive tried multiple settings including the performance guide located on the wiki for the general speed up and the game's specific page. Its all a little confusing as I know of very similar systems running the game with no issue.