Myself, no problems with RAM, but I do find that at times when using FirefOx, that my laptop slows to a crawl. I'm not clear why as nothing is maxing out (CPU, Ram are fine), but it happens anyway.

Hi, I have the same problem but here is what makes it worse. My desktop has 8 GB RAM and when FireFox runs, it eats easily 3 GB... Since the other applications use 4 GB, I'm at the limit but it still works. Now, my lap-top has only 4 GB RAM and when FireFox runs, there is not much RAM available... This appeared only with the Quantum. How can we limit the amount of RAM FireFox takes ?

    System Information
 
    Display Devices
  
    Disk & DVD/CD-ROM Drives
 

''judess69er [[#question-1238564|said]]'' <blockquote> Ever since upgrading to Firefox Quantum, I have noticed a huge RAM issue and after looming around forums for many months gathering different viewpoints on this problem, I feel like the issue is most likely being caused by the new Add-on (Extension) handling protocols. <Br><Br> Once you disable every single Add-on, you will notice Firefox uses about 80% less ram. The problem isn't that I have too many Add-ons. Even with a single Add-on enabled, the RAM usage dramatically increases. <Br><Br> I personally only use an ad-blocker and Google translator - very lightweight Add-ons for any other version of Firefox until it hits Quantum, and no I don't use 100 tabs in a single session. <Br><Br> I normally use like 2-3 tabs and have only about 8 tabs only max, but if that doesn't convince you, at Mozilla, that Quantum has horrible Add-on handling, take this into your figures: <Br><Br> Quantum without Add-ons idles on a fresh restart at about 400mb RAM usage, but once you enable an Add-on, that number jumps up to about 500-600mb and every Add-on enabled after that compounds the usage issue. <Br><Br> This wasn't a problem with Firefox until quantum was introduced, and from what I hear about the Firefox Quantum, the Add-on handling was changed to disallow Add-ons access to specific browser system files that some Add-ons were using that caused Firefox to crash. <Br><Br> Feel free to correct me if I'm wrong, but “Once you have eliminated the impossible, whatever remains, however improbable, must be the truth.” <Br><Br> I've eliminated all the other probable causes and the changes to the Add-on handling is all that remains. </blockquote> I see you using an older version of Flash. You probably should update that to the latest (...114). Also, FF 65 is supposed to be a bit better on Memory. You should update it also. Which Ad-Blocker do you use? I had ABP (Ad-Blocker Plus) and found '''uBlock Origin''' to be more Memory-Friendly with my old computer (Nov 2010, 8GB RAM). <Br> I do see in Task Manager, '''Physical Memory Usage''' over time creeps up the graph, eventually nearing my 8GB my computer has. So, depending how many Tabs/Sites I visit, when the Graph Line nears the top, I hear my disk drive go into 'crunch' mode. This must be FF Caching Data. This can happen within several days or 4 or 5 days later, depending on my FF use. <Br> However, one it reaches this point, the browser performance takes a nasty hit. The only way to regain better performance for me, is to Exit (Quit) FF and restart it. <Br> Please do this: <Br> Click on the Windows icon ''''Start'''' (bottom-left) and in the right column, bottom, click on '''Run'''. Enter in: <Center>'''DxDiag /64bit'''</Center><Br> <Center> (Skip the '''/64bit''' part if it's Windows 32-Bit.)</Center><Br> ...Wait until the green bar loads and disappears, then click "'''Save All Information'''". <Br> Post back here in the Forum, just these information parts, under these three Headers:<Br> '''System Information'''<Br> '''Display Devices'''<Br> '''Disk & DVD/CD-ROM Drives'''<Br> Make sure your computer is not too 'LOW' on disk-remaining space. This will be a major performance problem if your remaining disk space is '''TOO LOW!'''<Br> Example: At the moment, I have 37% space free. If you're way under 25%, then you're probably running into performance / Memory issues.<Br> Windows-7 and Programs like to have plenty of free-disk 'breathing' room. I recently cleared over 75 Gigs worth to get me to about 37% of free disk space.<Br><Br> Perhaps you may wish to setup a '''ReadyBoost''' Flash Drive.<Br> If you have a lot of Windows and Tabs (ok, you said you don't, but for others that do...) and your FireFox Browser is set to '''Restore Session''' when you start-up FF, the following will help with conserving some Memory:<Br><Br> Go to '''Options'''. Edit or Insert in the URL Box '''About:Config''' and go there. Set the following Values:<Br> <Center> '''browser.newtabpage.enabled; false'''<Br><Br> '''browser.newtabpage.enhanced; false'''<Br><Br> '''browser.sessionstore.restore_pinned_tabs_on_demand; true''' </Center><Br> This will preload only the last Tab you were parked on per browser window. The other Tabs from your Previous Session will load only when you click on them.<Br><Br> If you open a lot of browser windows, you can set the maximum 'remembered' browser windows higher than the default for your Restored Session. My max is set for 25:<Br><Br> <Center>'''browser.sessionstore.max_windows_undo; 25'''</Center><Br> Additionally, you could try this also. Have FF reset how much Disk Cache it will use for your system by changing the following to '''true''':<Br> '''browser.cache.disk.smart_size.first_run''' - false<Br> It will change back to '''false''' after FF is Exited and runs next time, setting-up your Disk Cache value. Maybe this doesn't need to run again, but I did it a while back and it 'appeared' to help me. <Br><Br> Finally, I did the following FireFox adjustments for my old 2010 computer with the '''Performance''' settings in '''Options''' as shown in the image attachment: <Br><Br> ~Pj