Hello, I'm curious what the dpi of the top puzzle rushers are. They can score a score of 30 in just 1 minute! I can solve nearly every time all the puzzles from 1-25 immediately. altough it is still hard for me to score 20 in 1 min. I have the feeling that I can be faster than I'm now. do you have any suggestions about the sensitivity from a mouse (dpi)? regards simon