Archive,

The software to use to tweak gaphics depends on your hardware.

For instance, I have a Radeon graphics card in my desktop. I sue Catalyst Control Manager & can tweak its settings way beyond anything that is an option within CFS2's "graphics" settings page...

Install AMD Catalyst™ Drivers For Windows® Based System | AMD

There'll be an equivalent tweaking software for NVidia cards. Not sure if this is even an option if you have one of those "Intel integrated graphics" machines though ...