Pretty sure 21 made a post about this or including it but I find this to be very good info especially with so called "Modern Gaming Mice". I can verify although I use an incredibly high mouse speed at the very least being able to turn 360 degrees in a fraction of an inch can be very useful. Check it out and some of the settings like Raw Input and Windows settings may help you regardless if you just have a basic mouse! ~Enjoi~ 

https://youtu.be/kwn78pUJ8dk

https://youtu.be/lAEuXEdgIDs

I was keeping some of this info secret as my backup weapon against 21 but he's a good m8. I'll share.