A lot of the reason why I personally find >60 wpm difficult is similar to the UI feedback studies that come up on HN from time to time. If I avert my gaze and l

A lot of the reason why I personally find >60 wpm difficult is similar to the UI feedback studies that come up on HN from time to time. If I avert my gaze and let my typing become a secondary act it's not as bad, but there are some UI situations where the keypress and UI display can be more than 6-12 characters behind so watching it gives me the feeling that I gave miskeyed something or the software froze. It's part of the reason why I prefer key chord driven autocomplete compared to in place autocomplete from the way it can be visually distracting while trying to keep up.