Faster than that. I watched a video where an alert deer jumped the string. A study by more than one video crew has said a deer can jump the string a full body length in 1/5 second.

A basic rule has always been recognized by most that a quieter bow is a more efficient bow and gives the bowhunter an advantage over a loud bow. Its always worked for me and I continue to try to get my hunting bow as quiet as possible. In fact it allowed me to make a double lung shot on a nice 9 pt. buck after missing the first shot.