Trying to run metriod prime; where's the bottleneck?

[hellmean]

Hi All,

I am trying to run metriod prime (really want to play it through). Unfortunately it runs about 95% speed.

It is most of the time at 100, but at moments it drops to 95 or 92. Usually when there is some complex structures (more stuff to render). So I really suspect this my GPU (HD5670), which is pretty darn cheap.

My CPU isn't very modern either: C2D E7500 OCed to 3740Mhz. But i noticed that more overclocking doesn't change things (there was a very minor improvement when I went from 2.93 to 3.3, but from there pretty much the same speed; it some other games it was rather noticeable).

I also use linux (with proprietary amd drivers), so I use OpenGL. Can it be a limiting factor?

Please confirm whether this is GPU. I really don't want to waste money for new one. I would welcome any recommendations about settings and everything.

Thanks!!

My specs:
CPU: Core 2 Duo E7500 OCed @ 3.7GHz
RAM: 4 GB ddr2
GPU: AMD HD5670 512 Mb
OS: Linux
EMU ver: 4.0.2