Hello there, You're not alone. I also find this mouse control annoying. I'll try to more accurately describe the issue: - X and Y axis have seriously different default speed. Hopefully this can still be tuned with the sliders - for some reason, I can NOT turn mouse acceleration off. Button stays on "On". I assume there's some .cfg trick, but I havent tried yet ! - last but certainly not least: there seem to be a mouse speed "cap", which is what makes it the most unbearable for me. I know these might seem "light" issues, and I don't know if it's just how the game is coded or if it's an issue that only affect a few people... but they are what prevent me from playing the game without wanting to kill kitty cats (zombie kitty cats though, don't you worry!) I also have no game controller plugged in that could be conflicting with the controls (first thing I checked !) best, Callyste Edit: Oh, forgot one last point: reticle has that weird freedom of movement on the Y axis, while X axis is fixed. Makes the whole thing even weirder!