しばらく前から、スクロールする量が不安定になっています。設定値の倍ほどの距離をスクロールしてしまう状態になることがあります。
下方向がおかしい場合はページの下端まで、上方向がおかしい場合はページの上端までスクロールすると（そのページに関しては）直るのですが、あまり実用的な対処方法ではありません。

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.

It is suprising how this nicely tuned piece of code survives to this day. Thank you kataho.

Smooooth as silk.

how can i revert back to defaults?!

Thanks for developing this. I am a laptop Linux user and I have a 4k external monitor, so the output is rendered by Nvidia GPU. When I used Firefox with smooth scrolling (which is set by default), there were always lags whenever I scrolled in Google. But after disabling it and using this extension to tune scrolling, everything has been perfect!

still an awsome feature ,but FF84 has changed some settings.
start scrolling with mousewheel is not smooth anymore
tested on 3 seperate systems with FF83 and upgrading to FF84.

- UPDATE -
for those with little jerky/jumpy scroll( FF 84+) found a solution;
Type about:config in the URL(firefox) and filter; "general.smoothScroll.mouseWheel.durationMaxMS"
change the value as 1000 and try it. (1000 worked for me other values may work too)
also look at your add on settings , it might need some tweaking
i changed "Staggered edge" setting on options tab, to 0
and slightly changed "jump"and "smoothness" setting

does not work!

It stopped working for me after a Firefox update but I did get it to work again after fiddling around toggling settings in about:config and uninstalling/reinstalling the extension a few times. Not fun thanks to the FF update but at least it is working again.

I'm not sure of exactly what did it but if anyone else is having issues, try uninstalling YASS, enable FF's default smooth scroll, reset the general.smoothScroll.mouseWheel.migrationPercent setting to 100, and toggle mousewheel.enable_pixel_scrolling off then back on again. Leave both pixel scrolling and FF's smooth scroll enabled, restart FF, and reinstall YASS. Might work but YMMV

Some folks are complaining that this add-on no longer works. I installed it and had it working as I wanted it within 5 minutes. Maybe I'm odd. I'm pleased with this add-on and if I had found it sooner I would of saved me a couple of hours messing around in about:config trying to make my scrolling smoother.

Unfortunately, the add-on no longer works with the update to Firefox 84.
I ask for an update. Many Thanks.

Edit:
Thanks to User 6859214, his Workaround works for me. Now it scroll smooth again.

I can confirm that after last FF update this extension isn't working at this moment.