5 ms·
Escape is also a good choice, especially for vim use.
Escape is also a good choice, especially for vim use.
I would have done that, but it is much easier to set it to Control (on OS X there is an option for Control, but not Escape).
Control-[ functions as Escape, in Vim.
If/once you remap Capslock to Control, this should be even easier to hit.