I'm using a Sapphire ATI Radeon HD 5850 1 GB. Whenever someone fires a torpedo or a three-dimensional effect appears on-screen while in the Empok Nor system, my framerate drops from 60 to 7. I should not be losing this much performance on a DirectX 9 game. This is the only location I've had a problem with during my playthrough of the game.
These are all the settings I had to turn off to get the game running at 60 FPS again:
High bloom quality
High dynamic lighting
High reflection quality
High detail objects enabled
Medium shadow quality
Screen-space ambient occlusion
Everything with a slider was at its default value, and I'm running the game at 1680x1050.