So yeah also grabbed this during the sale, aside from the stuff in the OP, here are some other universal tweaks that every UT3-engine game should have. First off, in APInput.ini
[Engine.PlayerInput]
bEnableMouseSmoothing=False
This will do nothing but delay your mouse responsiveness, and if it behaves like every other recent UT3 game it's been implemented in, it will suck. Mouse smoothing is the product of days when optical/laser mice were seen as completely optional, why newer games insist on it is beyond me
For APEngine.ini:
[ALAudio.ALAudioDevice]
MaxChannels=X
X is depending on your sound card. In most cases you can have 64 audio channels instead of the default 32. If your card is generic onboard sound, 32 is probably the most you can handle, but any relatively-recent Asus/Creative card will most likely be able to handle 64. 128 channels are mostly dependant on if the game has XRAM support or not (all two of them, and this isn't one)
[Engine.Engine]
AllowShadowVolumes=TRUE
bEnableVSMShadows=True
DepthBias=-2
[SystemSettings]
StaticDecals=True
DynamicDecals=True
DynamicLights=True
DynamicShadows=True
LightEnvironmentShadows=True
CompositeDynamicLights=True
DirectionalLightmaps=True
MotionBlur=(your choice on this one, I never liked it, but if you want it, set to true, if not, false)
DepthOfField=True
AmbientOcclusion=True
Bloom=True
QualityBloom=True
Distortion=True
DropParticleDistortion=True
SpeedTreeLeaves=True
SpeedTreeFronds=True
OnlyStreamInTextures=True
LensFlares=True
FogVolumes=True
FloatingPointRenderTargets=True
Trilinear=True
OneFrameThreadLag=False
UseVsync=True
UpscaleScreenPercentage=True
Fullscreen=True
AllowD3D10=False
EnableHighPolyChars=True
SkeletalMeshLODBias=-2
ParticleLODBias=-2
DetailMode=2
ShadowFilterQualityBias=-2
MaxAnisotropy=16
MaxMultisamples=(antialiasing never seems to really work on the software level, so just force it through CCC or nVidia CP, making whatever number here irrelevant)
MinShadowResolution=128
MaxShadowResolution=1024
ScreenPercentage=100.000000
SceneCaptureStreamingMultiplier=2.000000
FoliageDrawRadiusMultiplier=2.000000
ShadowTexelsPerPixel=3.000000
bEnableVSMShadows=True
bEnableBranchingPCFShadows=True
bAllowBetterModulatedShadows=True
bEnableForegroundShadowsOnWorld=True
EnableEyefinityDisplayMode=True
ShadowFilterRadius=2.500000
ShadowDepthBias=-2
Basically all the eye candy options enabled/tweaked. For a gauge on what this can run nicely on, I'm on a 5770 with 4x Edge-detect AA enabled
And if you're having problems with PhysX, or think its gay and don't want the GPU overheard, change the following to this:
bDisablePhysXHardwareSupport=True