'speed' issues despite fast system

[Dreadslayer]

Hello there

I'm new with Dolphin and I've got some performance issues regarding speed. All settings are standard (Direct3D9, http://www.dolphin-emu.org/performance.html?lang=en), I checked it thrice.

My System:
Win7 x64
AMD Phenom II X4 955 @3.2GHz
ATI HD 5850 1GB
4GB DDR3 RAM

For example in Soul Calibur 2, I always have ~40FPS but only a speed of ~60% (lower res. doesnt change anything). I thought this system would be sufficient!?

I also testet it on a E6750&8800GTS 512&Win7 x64, exactly same result, ~40FPS, ~60% speed.

Can anyone help me? Is it some kind of setting issue?

Help is very much appreciated!

Cheers
Dread

[Dreadslayer]

thanks for your answers so far...

In the meantime, I was seeking and testing a lot. I came across r6515 (some say its the fastest build) and testet it out. SC2 now indeed runs at full speed, constantly 60 FPS.

Can anyone explain this huge difference? Why is the performance decreased with the new revs?

Cheers

[skid]

It is slow because of the work in progress FIFO code.