I've been switching between two computers lately since the one I normally use seems like it's going to be dying soon. The new one I'm using is a bit more powerful than the old one, but for whatever reason, looking at fog causes the FPS to drop significantly and to the point where the game is almost unplayable. This is a computer that can handle games like Borderlands 2, STALKER, Fallout: New Vegas, and Crysis 3 at high settings with no problems, but fog in the older Unreal games just seems to. . . disagree with it? The problem isn't nearly as significant in UT as it is in Unreal, but as far as I can tell, my settings for both games are mostly the same.
What settings am I supposed to change to reduce the problem? I've messed around with "SinglePassFog" and some other settings, but nothing seems to help. I'm kind of at a loss for what to do here. I'm guessing it'll end up being something really obvious, but I can't think of what it could be.
Here are my OpenGL settings:
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[OpenGLDrv.OpenGLRenderDevice]
Translucency=True
VolumetricLighting=True
ShinySurfaces=True
Coronas=True
HighDetailActors=True
DetailTextures=True
FullMeshRendering=True
ZRangeHack=True
NoAATiles=True
NumAASamples=4
UseAA=True
RequestHighResolutionZ=True
MaskedTextureHack=True
SmoothMaskedTextures=False
FrameRateLimit=60
SwapInterval=1
UseFragmentProgram=True
UseCVA=False
UseMultiDrawArrays=True
TexDXT1ToDXT3=False
DynamicTexIdRecycleLevel=100
CacheStaticMaps=True
UseTexPool=True
UseTexIdPool=True
UseSSE2=True
UseSSE=True
BufferTileQuads=True
BufferClippedActorTris=True
SinglePassDetail=False
SinglePassFog=True
ColorizeDetailTextures=False
DetailClipping=False
UseDetailAlpha=True
DetailMax=2
RefreshRate=0
MaxTMUnits=0
NoFiltering=False
NoMaskedS3TC=False
MaxAnisotropy=16
UseTNT=False
Use16BitTextures=False
UseS3TC=True
UseAlphaPalette=True
AutoGenerateMipmaps=False
UseTrilinear=True
UsePrecache=True
AlwaysMipmap=False
ShareLists=False
UsePalette=True
UseMultiTexture=True
UseBGRATextures=True
UseZTrick=True
MaxLogTextureSize=8
MinLogTextureSize=0
OneXBlending=False
GammaCorrectScreenshots=True
GammaOffsetBlue=0.000000
GammaOffsetGreen=0.000000
GammaOffsetRed=0.000000
GammaOffset=0.000000
LODBias=0.000000
DescFlags=0
Description=
SceneNodeHack=True
UseHardwareClipping=True
EDIT: I also realized that the FPS drop happens when I look at emitters in either game. This is odd, because from what I can remember, I didn't have any problems with emitter-heavy games like UT2k4.
^ Actually, that only happens when I have lighting enabled and only in certain areas that have emitters - not sure what the deal is there. BSP issue, maybe? ( assuming they actually affect framerate )
EDIT 2: Figured out it's not an emitter problem after all - the FPS drop happens when looking at a few trigger lights(
). Still haven't found any solutions to the fog thing, though.