So I decided to do a clean install yesterday when I noticed that Firefox scrolling was really choppy and strange
First I tried installing another Distro, then another DE and it was all the same, but it was still working fine on my old installs, even fully updated
I discovered the problem after comparing about:config rules. For some reason new installs of Firefox have one particular rule changed which causes this. I’m not sure when it happened but here is the fix…
In about:config, type “smooth” in the search area. You’ll see the following entry several lines down:
general.smoothScroll.mouseWheel.migrationPercent
change it from 100 to 0 then save it, and everything will be normal