Well I played around with those settings you mentioned, and now the menu model is upside-down, and in-game, all I see is rain going up.
Current ini settings:
; === propertyMap File ===
CameraFov=300.00
CameraInvertXAxis=true
CameraInvertYAxis=true
CameraMaxDistance=200.00
CameraMaxYaw=80.50
CameraMinDistance=8.00
CameraMinYaw=20.00
DisplayHeight=768
DisplayRefreshFrequency=75
DisplayWidth=1024
DisplayWindowed=false
GsAutoRepairEnabled=true
GsAutoReturnEnabled=false
GsDayTime=1000.00
GsFogOfWarEnabled=false
GsRandStartLocs=false
GsSpeedFastest=5.00
GsSpeedSlowest=0.20
GsWorldUpdateFps=40
MiscAiLog=0
MiscAiRedir=false
MiscCatchExceptions=true
MiscDebugKeys=false
MiscDebugMode=false
MiscDebugTextureMode=0
MiscDebugTextures=false
MiscFirstTime=false
NetChangeSpeedAllowed=false
NetConsistencyChecks=false
NetFps=4
NetMinFullUpdateInterval=60000
NetPauseAllowed=false
NetPlayerName=Player
NetServerIp=192.168.1.1
NetServerPort=12345
PathFinderMaxNodes=4096
PathFinderUseAStar=false
RenderCheckGlCaps=true
RenderColorBits=32
RenderDepthBits=32
RenderDistanceMax=3000.00
RenderDistanceMin=1.00
RenderFilter=Trilinear
RenderFilterMaxAnisotropy=1
RenderFogOfWarSmoothing=true
RenderFogOfWarSmoothingFrameSkip=3
RenderFontConsole=Verdana
RenderFontDisplay=Verdana
RenderFontMenu=Verdana
RenderFov=300.00
RenderFpsMax=60
RenderGraphicsFactory=OpenGL
RenderLightsMax=1
RenderShadowAlpha=0.20
RenderShadowFrameSkip=2
RenderShadowTextureSize=512
RenderShadows=Projected
RenderStencilBits=0
RenderTextures3D=false
SoundFactory=DirectSound8
SoundStaticBuffers=16
SoundStreamingBuffers=5
SoundVolumeAmbient=100
SoundVolumeFx=100
SoundVolumeMusic=100
UiConsoleMaxLines=10
UiConsoleTimeout=20
UiEnableCommandMinimap=true
UiFocusArrows=true
UiLocale=en
UiPhotoMode=false
UiScrollSpeed=1.50