@Alexi_Alx_Anova
I have tempered a lot with my Conf.ini file. I have read posts at AAA from guys saying they had magical setups which were ATI-custom made. Others said you could maximize this or that and have plain awesomeness in your IL2. Honestly, none of them made too much of a difference. All I got most of the time was lower fps. I ended up sticking with the stock configuration and just set water to 1. I get decent fps most of time.
Just to illustrate, this is my openGL configuration. Some people say the lines ending with "NV" are nVidia-specific and should be disabled. I did that and noticed no difference whatsoever. I also tried increasing Forest and Land Geometry as some people said it would greatly increase IL2 appearance and consume very few fps. That did nicht to me either.
[Render_OpenGL]
TexQual=3
TexMipFilter=1
TexCompress=0
TexFlags.UseDither=0
TexFlags.UseAlpha=0
TexFlags.UseIndex=0
TexFlags.PolygonStipple=0
TexFlags.UseClampedSprites=0
TexFlags.DrawLandByTriangles=1
TexFlags.UseVertexArrays=0
TexFlags.DisableAPIExtensions=0
TexFlags.ARBMultitextureExt=1
TexFlags.TexEnvCombineExt=1
TexFlags.SecondaryColorExt=1
TexFlags.VertexArrayExt=0
TexFlags.ClipHintExt=0
TexFlags.UsePaletteExt=0
TexFlags.TexAnisotropicExt=1
TexFlags.TexCompressARBExt=0
TexFlags.TexEnvCombine4NV=1
TexFlags.TexEnvCombineDot3=1
TexFlags.DepthClampNV=1
TexFlags.SeparateSpecular=1
TexFlags.TextureShaderNV=1
HardwareShaders=1
Shadows=2
Specular=2
SpecularLight=2
DiffuseLight=2
DynamicalLights=1
MeshDetail=2
VisibilityDistance=3
Sky=2
Forest=2
LandShading=3
LandDetails=2
LandGeom=2
TexLarge=1
TexLandQual=3
TexLandLarge=1
VideoSetupId=17
Water=2
Effects=1
ForceShaders1x=0
PolygonOffsetFactor=-0.15
PolygonOffsetUnits=-3.0
@F19_lacrits
If you want updated Ctalyst drivers, F19_lacrits, stick with 9.12BETA. They are pretty good and they don't give this texture corruption output you'll get with 9.11.
Best wishes!!!