I have a razer deathadder elite and it has 2 side buttons, and 2 buttons on top to change dpi. I don't know why but they don't work at all in any of my games when I try to put them as keybinds and even the dpi changers dont work either. I've had this mouse for about 2 1/2 years but there shouldnt be anything wrong with it in terms of hardware because my m1 m2 and mmb all work and only the dpi and 2 side buttons are dysfunctional