Hmm. Without seeing the video - or being logged into the game to try the basic version myself, I am not sure but that sounds like... Not much? Then again that's say ~600 milliseconds which might be enough in a 'tight spot'.
How did it feel to you?
Off topic I know so apologies in advance - since you're obviously good at stealth - did you notice a difference in guards alertness since alpha? I have night vision in my Maverick, was crouched on top of a building slightly behind a tower at night with no torch switched on and guards within 50 meters just go bat-dung crazy and then do the classic swarm. Since release I've given up on stealth which is a shame, looking forward to some of those videos again if you have time

Really liked the stealth aspect before, it just seems very different now.