Well.. might not even be the game, but other software you have running.
Screen format: Widescreen (Normal would enable lower resolutions)
Resolution: 1280 x 720 (the lowest the better)
Color depth: 16 bit... (lol, anything is fine on this i think)
Window mode: Enabled
Frame Skip: 0 (0 = disabled, caps at 30, 1 = caps at 15, 2 = caps at 10)
--- All the stuff in between high, but set to low if needed
Fog: Pixel (the others make it lag a bit iirc)
Low res texture: disabled (not sure if this does anything tbh)
Advanced effect: enabled (not sure if this does anything tbh)