thats really weird, if ur mouse is at 800 dpi and 1000hz / 1000hz - and ur sync is off, this shouldn't be happening...i definitely recommend you double check ur dpi (JUST IN CASE- im sure u know what ur running but just as a troubleshooting step)then def check sync, and if u havent ..maybe even make sure to start a new config in case any other setting is hanging out in the background causing the problem. For me id have to swipe the mouse pretty good to do a 180...so this is definitely not normal... if anyone else has any idea's let us know. Also...could u tell us what mouse you're using?
Yeah really is strange, double checked everything Sync off, 800 dpi 1000/1000
I'm using a Razer Viper Ultimate, will have another look in the morning and report back

Thanks again for ya help!