Mouse speed 2xfaster horizontal than vertical

Hey i have a problem with my mouse on my new windows 8.1 pc but not on my old win 7 pc.

My mouse speed is twice as fast when moving horizontal than vertical and i have no idea how to fix it

please help 

Check any dust that might be distorting your mouse's laser. Otherwise go to Control Panel and try adjusting the mouse acceleration and DPI settings. Also make sure your mouse's drivers are up to date.

it magicaly works again now.