I've gone through the mouse fix and checked everything it does against the code. Here's the results:
LookRightScale=0.000000
LookUpScale=0.000000
Bindings=(Name="LookUp",Command="Axis aLookUp Speed=+25.0 AbsoluteAxis=0")
Bindings=(Name="LookDown",Command="Axis aLookUp Speed=-25.0 AbsoluteAxis=0")
Set the speed of the look up, down, left, right keys on the keyboard, and any controller attached to the system to zero (they will still be calculated, but won't do anything). This does not have any effect on mouse input.
bEnableMouseSmoothing=False
Changing the mouse smoothing value in options screen is the preferred way of changing this value.
Bindings=(Name="MouseX",Command="Count bXAxis | Axis aMouseX Speed=2.0")
Bindings=(Name="MouseY",Command="Count bYAxis | Axis aMouseY Speed=2.0")
Doubles all the values input by the mouse. Does the same thing as doubling your your mouse sensitivity using the in-game options. (Final value is mouse movement * speed * mouse sensitivity * FOV Scale)
Bindings=(Name="GBA_TurnLeft",Command="Axis aBaseX Speed=-40.0 AbsoluteAxis=0")
Bindings=(Name="GBA_TurnRight",Command="Axis aBaseX Speed=+40.0 AbsoluteAxis=0")
These bindings are unused in the game, and adding them does not do anything.
OneFrameThreadLag=False
Disallow frame rendering to be later than the current frame. This might cause the game to end up being slower, but might make it feel more consistent. We can add an option for this.