Free view (internal and external)

Not sure but in controls section of settings general
Select mouse and then search input (scroll the wheel there)
Now you will get several zoom option which are bound.
Maybe here you can experiment will find to change some just click the gearwheel end of the line brings the options to do so

Another option would be in setting general ->accesibility-> effects and animation-> cursor settings
Try here cursor acceleration.

Hope this works for you