Option to reduce touchpad sensitivity at the end of each scroll
There are ongoing discussions about the high touchpad scrolling sensitivity on several Wayland applications like Firefox. Luckily, I found a workaround with this issue by setting `apz.gtk.kinetic_scroll.enabled` to `false` and increasing the default value of `general.smoothScroll.mouseWheel.durationMinMS` from `50` to `120`. However, there is still minor quirk with my scrolling experience especially at the end of each scroll or each time I pause scrolling.
This minor quirk has a lot to do with how I do the two-finger scroll gesture. For each scroll, I don't necessarily lift my fingers up immediately. I might pause for a while then scroll further until my finger reaches the end of the touchpad or I might scroll in the opposite direction without lifting my finger up. However, just having two of my fingers rest on the touchpad detects even the slightest movement. The effect is a page slightly shakes each time I pause scrolling without lifting my fingers up. Although, this minimal shake also occurs as I lift my finger up.
This behavior is detailed in a bug report here . It might have something to do with Wayland but based on my experience, the issue still persists when running Firefox through XWayland. Also, Vivaldi (Chromium) which also runs in XWayland, doesn't show this problem. In Vivaldi, the touchpad will be less sensitive (at least that's how it feels for me) each time I pause scrolling.
I already tried fiddling with the following through the `about:config` to no avail: