Sometimes FF loses FPS and starts working very choppy.

From time to time the browser starts working at very low FPS - smooth scrolling gets very choppy, typing in a text box shows the characters with a delay, minimizing/maximizing the FF window is also not smooth. I need to restart FF to make it work smooth again. I have this problem on multiple PCs - the only common thing is the CPU/GPU - Intel/NVIDIA. Tried Safe Mode, resetting FF - doesn't help - at random intervals it just drops to very low FPS. All plugins are up to date, all drivers are the latest. FF 23.0.1. It's as if there is an incompatibility between FF and my machines but can't find where.

Can you reproduce in a new profile?
* [[Use the Profile Manager to create and remove Firefox profiles]]
If the new profile works properly, transfer some files from the old one to the new one, see the [[Recovering important data from an old profile]] article.

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