After having put off updating FF for some time now (every update creates issues that require customisation back to preferred setup), I decided to update it. Short version of reasons is that FF 40 just wasn't behaving when using Flash vids, or streams, such as Twitch TV.
So went to the default update page and discovered that it's now a 64-bit version (FF 55). Ok then.
Well it's one hell of a slow starter. It takes about 5-10 seconds to start, and hogs resources bigtime. A single tab open with a Twitch stream gave the following (FF top, Opera bottom, with mem totals by me):
That's not some gfx-heavy stream either.
So at 466Meg and 46% CPU heavier, I think I'll be binning FF now. It's been a pain in the arris for some time now, with updates disabling add-ons without consent, then configure, or worse, install add-on 2 to correct the issues with add-on 1. We're not talking rocket science either. Just home page focus add-ons and the odd dev tool.
I had the choice of fairly heavy 32-bit FF, very heavy 64-bit FF, or fairly light Opera. No contest.