For your vague issue with unknown hardware and configuration? Well, no, to be honest. No idea at all.
If you mean that those lines are jagged, try editing the line Texture Sharpening="0" // Sharpen textures using MIP LOD bias - 0=Off, 1=+2.0(very blurry), 2=+1.0(blurry), 3=-1.0(sharp), 4=-2.0(very sharp), 5=0.0(auto) of the player.plr file, setting the value to "0", as in my exemple.
it sounds to me like simple aliasing. rf2 has pretty good AA compared to GSC, so if your FPS are ok you can bump up the ingame AA and it should take care of it. if that doesnt work or it slows you down to much theres the above tip as well.
