Octalblockin_usekeyboardsampletime 0
in_usekeyboardsampletime is used only if you keylook, eg. bind keys to +right or +left or +lookup or +lookdown and use those to look around instead of using the mouse. It's not used otherwise. It's also a feature, it's there for your benefit, if you disable it then changing viewangles with the key look commands will be (very slightly) stuttery and janky but yeah since no one uses the keyboard to look around it doesn't matter