It stopped working properly on Firefox versions of months ago.
Some websites have no issues at all.
Some have the issue only in one iframe but not in the other.
On some websites the scroll is sloppy.
On some websites there is no movement at all.

As soon as I disable the addon every website is scrollable again.

It was good for some years.
It's not anymore.

This averages to 3/5

I got an update for my Logitech Keyboard/Trackpad, and ever since my scroll has been SO broken. The slightest scroll down and the screen was suddenly sent FLYING to the bottom of the page. Without any fix within Logitech's own software options, I found this...

It's helped SO MUCH, and while there are only a few sliders, they change everything from amount of scroll, speed of attack and speed fade and the smoothness of it all, to the amount of bounce you get when you reach the bottom of a page.

That said, there's a learning curve involved, and it's pretty hard to dial in the perfect settings. Everything is easy to understand, it's just hard to know how changing [this option] [this much] will affect everything, and how moving [this slider] at all will affect [this option] over here.

Maybe better thought out presets for those of us who swoon at this level of customization would be helpful? Or maybe a tutorial somewhere to hold the hands of those that need it?

In any event, if you're having trouble with your scroll, or you just relish the idea of being able to change every aspect of your browsing experience, than give this one a try!