X
Tap here to go to the mobile version of the site.

Support Forum

Firefox runs slowly despite refreshing and starting in safe mode.

Posted

After the upgrade to Firefox Quantum, I've had nothing but trouble. When I try to type, it lags. Scrolling is slow also. I've tried starting in safe mode and refreshing Firefox and neither of those things helped. I'm ready to give up on Firefox. Any suggestions?

After the upgrade to Firefox Quantum, I've had nothing but trouble. When I try to type, it lags. Scrolling is slow also. I've tried starting in safe mode and refreshing Firefox and neither of those things helped. I'm ready to give up on Firefox. Any suggestions?

Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36

More Information

Pkshadow
  • Top 10 Contributor
916 solutions 11939 answers

Helpful Reply

Please consider turning on send info to Mozilla before posting a question. This helps us help you. As I have no info from your system that would help see things that cause issues.

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

https://support.mozilla.org/kb/Firefox+is+already+running+but+is+not+responding

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

You could try this please : Go the Menu then Tools --> Options --> Performance and untick everything. change the recommended size lower then see how it runs. Hardware Acceleration might have also been a issue so turn it off. Run it later and see as you turn things back on and test it, and again. Restart Firefox after making these changes please.

Have a look at this one, shows above : https://www.howtogeek.com/332449/whats-new-in-firefox-quantum/

And for later : https://www.howtogeek.com/333110/how-to-customize-firefox-quantum-and-remove-the-white-space-around-the-title-bar/

Please let us know if this solved your issue or if need further assistance.

Please consider turning on send info to Mozilla before posting a question. This helps us help you. As I have no info from your system that would help see things that cause issues. Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox. A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there? https://support.mozilla.org/kb/Firefox+is+already+running+but+is+not+responding 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 You could try this please : Go the Menu then Tools --> Options --> Performance and untick everything. change the recommended size lower then see how it runs. Hardware Acceleration might have also been a issue so turn it off. Run it later and see as you turn things back on and test it, and again. Restart Firefox after making these changes please. Have a look at this one, shows above : https://www.howtogeek.com/332449/whats-new-in-firefox-quantum/ And for later : https://www.howtogeek.com/333110/how-to-customize-firefox-quantum-and-remove-the-white-space-around-the-title-bar/ Please let us know if this solved your issue or if need further assistance.

Question owner

This was not helpful. How do I send you my computer information?

This was not helpful. How do I send you my computer information?
Moses
  • Moderator
459 solutions 3602 answers
  1. Use ONE of these methods to open the Firefox Troubleshooting Information page:
    • Click the menu button New Fx Menu , click on help Help-29 and select Troubleshooting Information.
    • Type about:support into the Firefox address bar and press the enter key.
  2. At the top of the Troubleshooting Information page that comes up, you should see a button that says "Copy text to clipboard". Click it.
  3. Now, go back to your forum post, right-click in the reply box and select Paste from the context menu (or else click inside the reply box and press the Ctrl+V keys) to paste all the information you copied into the forum post.
# Use ONE of these methods to open the Firefox Troubleshooting Information page: #* Click the menu button [[Image:New Fx Menu]], click on help [[Image:Help-29]] and select ''Troubleshooting Information''. #* Type '''about:support''' into the Firefox address bar and press the enter key. # At the top of the Troubleshooting Information page that comes up, you should see a button that says "Copy text to clipboard". Click it. #Now, go back to your forum post, right-click in the reply box and select '''Paste''' from the context menu (or else click inside the reply box and press the Ctrl+V keys) to paste all the information you copied into the forum post.
jlinkes 0 solutions 5 answers

Was this ever solved? I'm having the same issue, but resetting, refreshing, safe mode, or even uninstalling and reinstalling doesn't help. I'm about ready to give up on Firefox and go back to Chrome.

Was this ever solved? I'm having the same issue, but resetting, refreshing, safe mode, or even uninstalling and reinstalling doesn't help. I'm about ready to give up on Firefox and go back to Chrome.

Modified by jlinkes

FredMcD
  • Top 10 Contributor
3668 solutions 50312 answers

jlinkes Please go to the top of any support.mozilla.org web page and use the Ask A Question link; https://support.mozilla.org/en-US/questions/new Select the product for what the problem is (Firefox or whatever).

Now select the category for the problem. At the bottom is Other.

Describe the problem in brief (one line). Then press <enter>. The website will display any prior posts that might help you. If nothing on the list can help, at the bottom press the button; None Of These Solve My Problem.

Now enter all the relative information on the problem. At the bottom of this, you can Add Images.

Under this is Troubleshooting Information. Please press the Share Data button. This will let us look at your system details. No Personal Information Is Collected.

'''jlinkes''' Please go to the top of any '''support.mozilla.org''' web page and use the '''Ask A Question link; https://support.mozilla.org/en-US/questions/new''' Select the product for what the problem is (Firefox or whatever). Now select the category for the problem. At the bottom is Other. Describe the problem in brief (one line). Then press <enter>. The website will display any prior posts that might help you. If nothing on the list can help, at the bottom press the button; '''None Of These Solve My Problem.''' Now enter all the relative information on the problem. At the bottom of this, you can Add Images. Under this is '''Troubleshooting Information.''' Please press the '''Share Data button.''' This will let us look at your system details. '''No Personal Information Is Collected.'''