I found this too when I tried running my PC with a 30Hz display. I was surprised how bad it was. Windows '9x's default mouse sampling rate was 35Hz, and that wa

I found this too when I tried running my PC with a 30Hz display. I was surprised how bad it was. Windows '9x's default mouse sampling rate was 35Hz, and that was perfectly tolerable. 25Hz/30Hz games are playable. 60Hz will be better, but there's no reason a 30Hz monitor has to be an absolute outright disaster. And yet... Obviously over time a bunch of extra frames of latency have snuck in, and at a refresh rate of 60Hz it's just not noticeable enough for enough people to have proven worth fixing. (I've read of a lot of people finding 60Hz monitors more annoying to use after they've spent some time with 144Hz. So roll on 144+Hz... perhaps either we'll all upgrade, and the cycle will repeat, or our eyes will be retrained and we'll start to demand more from our existing equipment.)