https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-ram https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding https://support.mozilla.org/en-US/kb/firefox-takes-long-time-start-up https://support.mozilla.org/en-US/kb/quick-fixes-if-your-firefox-slows-down MemTest LAST UPDATED : 12/04/2020 Could you please run a tool from http://memtest.org/ in order to check the integrity of your RAM? You will need a thumb or disk drive to install it on. Do you let Windows handle the page file or did you set a fixed size ? If you use a fixed size for the page file then try the former and let Windows handle the page file. [https://docs.microsoft.com/en-us/windows/client-management/determine-appropriate-page-file-size#:~:text=Support%20for%20system%20crash%20dumps%20%20%20,on%20kernel%20virtual%20memory%20usage.%20%20...%20 How to determine the appropriate page file size for 64-bit versions of Windows] {web link}

''<p>FredMcD [[#answer-1381418|said]]</p>'' <blockquote>https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-ram https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding https://support.mozilla.org/en-US/kb/firefox-takes-long-time-start-up https://support.mozilla.org/en-US/kb/quick-fixes-if-your-firefox-slows-down MemTest LAST UPDATED : 12/04/2020 Could you please run a tool from http://memtest.org/ in order to check the integrity of your RAM? You will need a thumb or disk drive to install it on. Do you let Windows handle the page file or did you set a fixed size ? If you use a fixed size for the page file then try the former and let Windows handle the page file. [https://docs.microsoft.com/en-us/windows/client-management/determine-appropriate-page-file-size#:~:text=Support%20for%20system%20crash%20dumps%20%20%20,on%20kernel%20virtual%20memory%20usage.%20%20...%20 How to determine the appropriate page file size for 64-bit versions of Windows] {web link} </blockquote> Im sorry no, this is not the solution, Firefox dev teams should resolve the memory problem from scratch, this is not a new issue, im using 5 or 6 pcs from differents prices and specs / years, and firefox does not clean used memory by itself, im an old firefox user i know how it is but I dont accept that firefox cant handle memory clean, it only consumes more everytime, i saw devs try to stop the incrementing use, by freezing tabs to a new state of -suspended while not watching-, its a good aproach, but they know this is not the answer specially with the new technologies such html5 if you had eliminated successfully flash (thanks to steve j), then you should think about html5 as the new flagship try to open opqa.com html5 version with firefox for example and at the same time try to open facebook or instagram open task manager not even call of duty uses that amount of memory leak, same machine, same memory, the problem is how firefox handles the used memory i wish to see firefox lowering the use of memory right now only rises up in login grows 40 kb/s its about 144 mb more every hour playing grows 10~15 mb/s its about to time to reach 1 gb or 2 gb or 3 gb and more of course you will say this is a problem of opqa.com developers, you try now chrome, and you will see this not happening, same code, same technology, same machine ,same memory but chrome cleans his memory

It's a beast. It becomes greedier iteratively. Limit yourself to a single tab per browsing session with an adblocker like uBlock Origin (you can't trust 'adblock plus') As long as you have session restore enabled you can task kill firefox and start it again to wipe the ram hogginess while retaining your place Also don't use less than 16gigs of physical ram