well let me know im wrong but if you try to tweak the LCD refresh rate down to 30hz, all we will see is the screen flickering. A human eye cannot see the different above 50hz. but for fast moving animations we usually use 60hz. I totally disagree with the people who are trying to give you an impression that there is no point working on this problem. i think you have chosen the best problem to solve. it is one of the most annoying problem and it needs fixing. BEST OF LUCK