30Hz and be very playable for pretty much any game
I could tell when my FPS dropped below ~75 when I used to play CounterStrike on my 85hz CRT. I got to try a friend's 120hz CRT and it was noticeably smoother than my 85hz when I needed to quickly turn around or I was doing close combat knife fights and lots of pixel movement was going on.
in recognition of the fact that users often don't know what they need until they see something working.
As my professor said many times, users NEVER know what they need, only what they want. It is your job to determine the requirements, not the user, you decide what they need.
He has not acquired a fortune; the fortune has acquired him. -- Bion