I'm playing with 250hz myself, tested it with the tool, on 1000hz it was just jumping all the way around, 500hz gave me an average of around 333hz and 250 was really stable.
Just test it for urself, maybe u got a newer mx518 and it can handle the 500hz better
dunno how it is with setpoint today, but few years ago, it caused more problems than good, since then I am not installing any drivers for mouse, I dont think its needed (maybe when u want some fancy dpi x/y changing and other useless stuff). I recommend not to install any drivers, just use accellfix, set usb rate to 500 and play.
Just test it for urself, maybe u got a newer mx518 and it can handle the 500hz better
250 hz = 4ms
500 hz = 2ms
1000 hz = 1ms
delays
1000 can be used on more stable mice
anyway 500 is quick enough id say.
with 500hz everything is fine
Can't imagine how the fuck I would own with 1000Hz :}DD
http://sample.wippiespace.com/Sample/Random/mouserate_switcher.zip
Use 500hz, 1ms is hardly noticeable.