I always wondered why they made this so complicated.
Just change:
Bindings=(Name="MouseX",Command="Count bXAxis | Axis aMouseX")
Bindings=(Name="MouseY",Command="Count bYAxis | Axis aMouseY")
to:
Bindings=(Name="MouseX",Command="Axis aMouseX")
Bindings=(Name="MouseY",Command="Axis aMouseY")
Removing the count removes the smoothing and makes it 1:1
I could be mistaken though it has been a few years since I looked into it lol.