DirectX 9

[Target]

I've been playing COD2 for a while and have only just loaded FRAPS. Apparently I've been playing between 15-28 FPS I thought it played ok, though.

So I knocked the game down to DirectX 7 and average 50 FPS.

What am I missing when I use an earlier version?

 

[Ender]

graphical quality mainly, special effects and such