What? There's only 3 maps total if you don't include the 2 different background maps. The Intro. The interior, and the exterior of the facility. As for a fix, I wouldn't know. Try messing with the graphic settings. Seems to be something related to DX8. If you're using DX8 that might be the problem.
Pollution756
Anthony joined
I play guitar and make Source Mods. Need I say more?