he can try 16bit rendering instead of 32bit

wheelview camera (no cockpit)

drop the MIP bias a bit

close some mirrors

turn off the sky

well

there might be nothing he can do about the hardware, but he can tweak lfs, fo so'

yea do those things george said, that should help it, but don't count on getting a stable 30fps out of that machine

Also turn off shadows, turn on half textures, turn down mip bias a lot (it can have significant FPS boosts) drop LOD biases all the way, lower resolution, make sure it's full screen, close anything running in background..
turning off the sky should have very significant gains if you haven't done so yet, you should see a good 5+ fps boost hopefully.

Just remember.. polys are easy to render, textures are the FPS killers, so even if you were to go into the DDS and pic folder and cut all the files in half you could see a good quarter percent or more FPS boost probably

Quote from XCNuse :

40 FPS is a bit low, 60 is the best, it's easy to see frame differences especially from 40-60, but from 60-100, it's .. visible, but not as much, 60 is the best median FPS, 40 is to jumpy for me..

I reckon 40 is fine with that, using a car analogy; driving 120kmh with a lada vs. veyron is not the same.