Originally you asked "is 54.55 ms perceptable?", I say yes. I can tell the difference between 25 ms and 1 ms in my terminal. That said, I don't think it is wor

Originally you asked "is 54.55 ms perceptable?", I say yes. I can tell the difference between 25 ms and 1 ms in my terminal. That said, I don't think it is worth trying to reduce your startup time to the point where you can't tell the computer took time. Getting "the user [to] feel that the system is reacting instantaneously" is a different and more important goal.