3 ms·All old computers get it right. They are not doing UI asynchrony. It's a fairly recent problem.by buckminster 6y agoAll old computers get it right. They are not doing UI asynchrony. It's a fairly recent problem.danaliv 6y agoMy new computers get this right too. This is a design flaw.mkl 6y agoKeyboard maybe. That same old Mac probably processes mouse events out of order: when it was being slow you could click on something then move the mouse somewhere else, and it would click the new place instead.