Just bought CM Masterkeys Lite L mouse&keyboard combo. Keyboard is amazing but mouse is the worst part. This mouse tracks movement too high up from surface. its like 5-7mm, and its impossible to play any game comfortably because i have to lift it so high. This also makes the mouse very inaccurate in shooter games. Before this I had Bloody mouse (costs 16euro or 18 dollars) and there was a way to calibrate the sensor so it wouldn't track movement so high up in the air. This 50euro or 57dollar Cooler Master combo doesn't have a software to do it. How do i calibrate the damn sensor then? Talking about the software... which DOESN'T EVEN work at all! (Cooler Master Portal), It says i have to connect to the internet, and yet I'm writing this without any internet connection?! If theres no solution will throw this mouse in the thrash can. CHANGE MY MIND!