You almost hit the nail on the head here, but the actual numbers are just wrong. If your monitor has a 144Hz refresh rate, it refreshes 144 times per second, or once every 6.9ms. If you have a 1ms response time on it, then it will take between 1 to 7.9ms for the latest rendered frame to be displayed (depending on when it was rendered by your GPU relative to the last screen refresh). If you have a 4ms response time, it will take between 4 and 10.9ms for that latest frame to be displayed after is it rendered. HOWEVER, your screen refreshes once every 6.9ms, NO MATTER WHAT YOUR REFRESH RATE IS. The only difference between the two is how new that displayed frame is. Granted, that is an important difference, but it is the only difference. You will still see the exact same number of frames, no matter how short the response time is.