I've done original research where we tested users perception of lag. We tested 5ms, 10ms, 15ms, and up. We found that most people were able to perceive lag in

I've done original research where we tested users perception of lag. We tested 5ms, 10ms, 15ms, and up. We found that most people were able to perceive lag in the 30ms range, and so this post is correct when it says that. However, I was able to recognize lag down to around 15ms. (We did double blind tests and you had to indicate when you saw lag, not all of the events were lagging. It was pretty accurate, but this was a test for some gaming software and so the results weren't published.) I perceive no lag in the Mac OS X mouse. I am very sensitive to it. I'm able to perceive the flicker in fluorescent bulbs, yet I do not see any lag in the mouse. I think if he's seeing 32ms, it is some particular combination of hardware and software. I've tested this again with my trackpad and my cheap logiteck trackball. No perceivable lag. I play Team Fortress all the time, there is no mouse lag. There is, of course, noticeable network lag.