So shame on me for not disabling mouse acceleration as a gamer, I finally turned that thing off in control panel, Logitech driver settings and finally the registry (hard-coded into windows, who woulda thunk it?). Now I'm missing my desktop/browser clicks half the time, I can't even navigate around windows without occasionally missing buttons/icons and feeling rather confused since DPI has stayed exactly the same as before. It's so unnerving, argh!! :P