The CPU settings make very little difference as far as performance goes. In fact if you set it too high then the emulator actually slows down. I don't know if you get a kick out of lying about the game's framerate or if you're so clueless that you can't tell the difference between 5 and 25 frames per second, but if you want I can probably record the game in ePSXe running at different speeds using fraps so you can see the difference.
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