Thanks for the link, but none of it worked. I've since discovered a slightly weird thing. Immediately after changing the number of lines in Settings to 3, it works: I can scroll my browser by 3 lines at a time. But when I navigate away and come back to Chrome, it's back to 20 lines again ...
The number of lines to scroll at a time by my mouse is set to 20. I want to change it to 3 lines at a time. so I set it to 3 in Settings and again in Additional mouse settings. This does not work. I change the registry setting WheelScrollLines to 3 and reboot. This doesn't work either. The...