Splendid !
edit: there is a little issue, when you press and hold mouse button(any)，smooth scroll won't work.

Works great. Highly customizable!

oddly enough, the addon didn't work when I first installed it. I thought it was broken and disabled the addon because I couldn't scroll pages at all. but the next time I booted my OS, totally forgot of the addon, I scrolled and everything was so satisfyingly smooth. not sure what was the initial issue but it works great now! very recommended.

Works instantly!

With some brief tweaks, you can make it feel just like scrolling on an iPad, which is pretty impressive.

Wonderful!This is just what i need!

非常好
推荐配置：
Recommended configuration：
105
18
60
120
0.25

Thanks ..yeah so much ..thought Firefox lost
its ways and they have ! did not loose all
still have you ..
Thank you ..much
For all your work ....

Thanks for the update. It works again. but step size 300 is too small for 4K screen. Could you kindly increase the size, like 600, 1000? Thanks.