Disable mouse "smoothing" in default/sample config
It's herky jerky and frustratingly difficult to click small UI elements with "smoothing" enabled. With it off, cursor motion is certainly much slower, but far easier to control with precision. Best solution would be a more sophisticated smoothing/acceleration algorithm. (If acceleration is to be applied on the basis of a single conditional, it should be raw distance since last move, not time since last packet, since you may be sending updates continuously for attempted slow precise manipulation.)
Remove cruft files