Since at least March 1, 2016, I have been having very low performance in Firefox. Currently running FF 45.0.1 on Mac El Capitan. I am not having these issues to this extent on other browsers on my machine. Symptoms include: - Long pauses followed by jumpstarts with errors while composing text in Gmail, composing text in forms - Choppy, lagging scrolling - Must hit enter in the address bar for new sites multiple times for the web page to display - General choppy & slow performance Steps I have taken which have slightly improved but not fixed the problems: - Restarted in Safe Mode (really did nothing at all) - Closed all tabs - Deleted all but the last 120 days of history (helped a lot, but not cured) - Used plug-in to perform places database maintenance Please help. I prefer to use Firefox so much. Thanks.