[8FS_Bulau]

[Render_OpenGL]
TexFlags.TexEnvCombine4NV=0
TexFlags.TexEnvCombineDot3=0
TexFlags.DepthClampNV=0
TexFlags.TextureShaderNV=0

HardwareShaders=0

VideoSetupId=1
Water=1
Effects=1

Video Card:
NVIDIA GeForce GTX 260

Have you run il2setup and selected something close to your specs, because it doesn't look like it?

All those "TexFlags..." items I quoted should be =1 for nVidia.
While you're there change HardwareShaders=1 and Water=3 or 4