Bioshock.ini [WinDrv.WindowsClient]

[Terror from the Deep]

In the Bioshock.ini file I discovered the following values:

[WinDrv.WindowsClient]
TextureDetailInterface=Normal
TextureDetailTerrain=Normal
TextureDetailWeaponSkin=Normal
TextureDetailPlayerSkin=Normal
TextureDetailWorld=Normal
TextureDetailRenderMap=Normal
TextureDetailLightmap=Normal

I run the game at maximum details (ingame setting), so my question is: why do these settings remain at Normal? I manually changed them to "High" but after exiting the game they are set back. Are better values DX10-exklusive?
My [Engine.RenderConfig] values are:

HDRSceneExpBias=-3
MaxSkeletalProjectorsPerActor=6
OffsetSkeletalProjectorRearFrustrumPlane=10.000000
UseSoftwareAntiAliasing=True
EdgeDetectCutoff=0.002000
EdgeBlurSize=0.500000
StreamingVisibleWeight=10.000000
StreamingDiffuseWeight=4.000000
StreamingBSPWeight=1.000000
StreamingEmissiveWeight=7.000000
StreamingLightmapWeight=5.000000
StreamingNormalmapWeight=1.000000
StreamingDynamicLoadedWeight=10.000000
StreamingDistanceScale=1000.000000
HighDetailShaders=True
Shadows=True
RealTimeReflection=True
PostProcessing=True
HardwareOcclusion=True
UseRippleSystem=True
UseHighDetailSoftParticles=True
UseSpecCubeMap=True
UseDistortion=True
ForceGlobalLighting=False
CascadingWaterSimulationVelocity=10.000000
UseHighDetailPostProcEffects=True
UseMultithreading=True
DisableExtraAntiPortalClip=True
TextureDetail=High
FluidSurfaceDetail=High
DynamicShadowDetail=Medium

Do I play with medium details without even knowing it?

[Ashsimmonds]

Try changing them and see the different. But you MUST back up as if you change something and the game dosn't load, i found you couldn't just go and cahnge the settings back, you have to re install. But if make a copy of the original file, you can deleat the altereed one and put the original back in.

[Ashsimmonds]

Ok i changed the figures, but for some reason with Bioshock is you can't edit any ini files. When you go to launch Bioshock you get an error report. So...

[Terror from the Deep]

Well, for me, it work's but I can't see any difference. And the values are set back when I open the file after exiting the game.