Use of the high memory when multiple tabs are open (and closed)

When I open Firefox memory usage is around 70-100 MB RAM. When I work with Firefox I often open 15-20 tabs at once, then I close them and open others. Increaes of use up to 450-500 MB RAM memory. After the closing of tabs use decreases normally, but after some time. He begins to decrease very slowly and never returns to the level from the beginning. After a few hours Firefox uses about 400 MB of RAM, even if only one tab is open. First I thought it's because of my plugins (Firebug, Speed Dial, Adlock more) but I have checked and it is not. I reinstalled Firefox but the problem occurs as well. I don't know if this is normal. Could you help me, please?

Hello

Not an exact answer, but please see that. Article questions through various General situations that may or may not be applicable to specific cases, but could nevertheless be useful.

...............................................................................................................................

Useful links:

Everything on tools > Options

Beyond the tools > Options - about: config

Subject: config entries

Which is preferably that? module -quickly decode about: config entries - after installation, go inside on: config, right-click preferably, enable (check) results of MozillaZine Board, and once again right-click a pref and choose MozillaZine reference first.

Keyboard shortcuts

Files & Firefox profile folder

Safe mode

Problematic Extensions/add-ons custom

Troubleshooting Extensions and themes

Tags: Firefox

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