Magic Mouse 2 - Faster Tracking Speed Solved

After searching all over, this is the solution that currently works on MacOS High Sierra to increase Magic Mouse 2 tracking speed. It sets the speed higher than the available system settings max.

Open Terminal and enter this: defaults write -g com.apple.mouse.scaling -float 5.0, then hit enter, close Terminal.

Now simply log out, then back in. Try out your new mouse speed! You can change the "5.0" setting higher if you eat faster. I am enjoying mine at 15.0.

Enjoy!