I have been practicing a bit lately and i don't know if it because i broke my wrist a couple years back but whenever i play for about 45 minutes straight (at 5-star hard/intense) my wrist becomes unmovable and stricken with pain. Just wondering if any other mouse-users have this problem. Also use the Razer death adder and my 4th finger, the one next to the pinkie, locks up and doesn't bend due to how straight the mouse is.