Need more frames. What else can I do?

[Vengeanze]

I run on an iMac. Clean and up-to-date W7 on boot camp.
The native res is 2560 x 1440 and flying in any other res in game makes everything look like crap so I can't turn down res.

When everything in video settings are set to a minimum of what I can accept I get 30 fps in Deathtrack and 20 - 30 in other single missions. This is just a tad too few to get a fluid session.

So any tip on what I can do to get me over the threshold?

- W7 up to date
- No AV
- Got the latest vid drivers (http://forums.guru3d.com/showthread.php?t=345525)
- Tried Pseudo
- Tried Gamebooster (gave me 1 more frame)
- Tried Affinity mask
- Tried ATI Tray Tools and RadeonPro (don't know how to work these programs though)
- Switched off Wallpaper rotation (desktop themes) in Win7
- Tried V-sync on/off
- Manually stopped unnecessary services in W7
- Power Management settings is set to performance
- Mirror in game turned off
- Checked ShadowMapSize in conf.ini (=5)

Haven't tried the ramdisk but apparently it won't help. Guess this means that a SSD won't help much either.
I gonna up the ram to 8GB soon. Dunno if this will help much.

Luthier said they gonna do some small optimization to the game in a couple of months.


So my question is, is there something that I haven't tried that can give me more frames without changing videosettings.