Firefox Uses Too Much CPU or RAM. ... To find the cause of the slowdown, first try starting Firefox in Safe Mode. This will make Firefox run without any add-ons or plugins. To use Safe Mode, go to the menu in Firefox and choose Help > Restart With Add-ons Disabled.
How do I fix slow Firefox?
Fixes for slow Firefox
- Clear browser data and disable the unused add-ons.
- Switch the hardware acceleration.
- Update your graphics driver.
- Resolve problems with unresponsive script.
- Run a virus scan.
How do I make Firefox run faster?
General methods to make Mozilla Firefox faster
- Clear browsing history regularly.
- Remove unnecessary add-ons.
- Remove unnecessary toolbars.
- Disable Flash.
- Disable Firefox Auto-update.
