Hello, last time I bought new imo(intellimouse optical) and now I'm having problems with that, when I will make fast move mouse is freaking out, when I using it only on windows to browse internet it's ok but on ql when I was trying to make for example rocket jump it's impossible, with very fast move mouse is going out of control. I have question too, I have Windows 7 64bit and is there a chance that somebody will send me his hidusbf.sys file with 500hz mouse rate? or higher, I was trying to do this with usb mouse rate adjuster or something like that but without any progress, then I downloaded some file special for win7 64bit and my mouse rate changed to 150 I guess or 250.