i don't understand how people can play osu!, or any games for that matter, with precision/acceleration on.
it was stated previously in this thread, but these things mean that the distance your cursor moves across your screen is dependent on how fast you move your mouse. if you turn it all off (which doesn't just mean unchecking the appropriate boxes in settings) then 1 cm of movement of your mouse will always be the same distance of cursor movement regardless of the speed you move your mouse. i think this is far more ideal in games (osu! especially). it takes a day or two to get used to once disabling it, but most people find it increases their accuracy over time.
if you're interested in fully disabling mouse acceleration in windows, read this and use the linked tools:
http://donewmouseaccel.blogspot.com/201 ... n-fix.htmli've read through the source code of all the vb scripts to make sure there wasn't anything malicious in them, if you're scared about that type of thing.
anyways...
mouse: logitech g700
osu!: windowed mode, 1.00x, precision unchecked (makes sure cursor moves the same inside and outside of osu!)
windows: 7th tick-mark (equivalent of 1.00x), precision unchecked and completely disabled using the registry scripts linked above
setpoint: 1600 dpi, 500 polling