I can't decide whether I'd prefer the delayed, jerky scrolling in Firefox, or Chrome not displaying pages correctly since the last update. Since Chrome scrolls fine and Firefox displays pages correctly, I would guess it's not my computer...especially since there seems to be a lot of people with the same problem on the Chrome forum. I hope Google fixes the problem soon, and I have no idea why Firefox scrolls badly.
Sorry, I just had to vent for a minute...
There are exceptions to every rule...
and I know I'm mighty exceptional...
Linux user #415188
I have and use both. Chrome is my go to, and if I find a page not rendering properly I fire up FF. And even at times Qupzilla does better on some pages than either of the other two. Point is, one does not have to depend on one browser.
By delayed, jerky scrolling I mean I turn the scroll wheel, and in a few seconds it will jump down the page...a few lines at a time. And yes, smooth scrolling is checked. I even tried unchecking smooth scrolling, closing the browser, opening it and re-checking smooth scrolling...no difference...
There are exceptions to every rule...
and I know I'm mighty exceptional...
Linux user #415188
Try resetting the FF profile and see if the jerky scrolling goes away. Rename ~/.mozilla/Firefox to ~/.mozilla/Firefoxbak and restart Firefox. That will create a brand new profile. If the jerkiness goes away, then it's something in the old profile that caused it -- maybe it's a misbehaving add-on or maybe the profile itself is corrupted. If it's an add-on, it might be possible to find out which one by reinstalling each add-on one at a time. Of course, you'll have to restore your other settings, bookmarks, etc. also. FEBE is a great tool for restoring the settings from the old profile.
If the jerkiness persists with a new profile, then you can restore the original profile by renaming ~/.mozilla/Firefoxbak to ~/.mozilla/Firefox.
MX-14; 3.12-0.bpo.1-686-pae kernel using 4GB RAM
2.4GHz AMD Athlon 4600+
NVidia GeForce 6150 LE; 304.121 Display Driver
You didn't slow down because you're old; you're old because you slowed down.
I've had scrolling become jerky once when a script is running in the background on Firefox. The remedy is to close and re-open Firefox. It doesn't seem like this is your problem, but you might try the NoScript add-on just to make sure.
Did you recently "upgrade" FF to a newer version? Any other changes to your system? Did you try a different mouse?
Re: Smooth Scrolling add-on
I've been using the "Yet Another Smooth Scrolling" FF add-on for a long time, and it really works for me. You can adjust the Step Size, Smoothness (Forepart), Smoothness, and Acceleration Sensitivity and save those settings to three different profiles that you can change on the fly to suit your needs. This add-on makes scrolling in Firefox incredibly smooth on my computer, and it works whether smooth scrolling is enabled or disabled in Firefox.
MX-14; 3.12-0.bpo.1-686-pae kernel using 4GB RAM
2.4GHz AMD Athlon 4600+
NVidia GeForce 6150 LE; 304.121 Display Driver
You didn't slow down because you're old; you're old because you slowed down.