First go to control panel on windows. Then search up mouse in the search bar. Then click the 'change mosue settings' option. Then go to the pointer options tab. There you will be able to adjust the sensitivity. But for sure you have to see the little secret the pros use. I've expereienced it too its amazing. The secret is at the end of the video so watch till the end! It's just a 2 min vid so that I don't wanna waste your time!
did you watch the video because i thought it explained it well. Anyways I will type it right now.