How do I fix a lagging problem on Firefox?
Fix Firefox Profile Software and Hardware Errors, Firefox error tech experts will diagnose and troubleshoot both software and hardware errors on your PCs or servers to ensure smooth performance. Resolve Compatibility Issues, The technicians will fix conflicts and compatibility issues with software applications or hardware running on your computer.
Reduce Computer Crashes, Get tech support to identify and fix issues causing your computer to crash often. Elimination of Problems at the Root, Root cause identification through logical troubleshooting methodology helps to eliminate problems completely and prevent their recurrence.
Use Safe Mode
Firefox has a Safe Mode that loads Firefox without loading your add-ons. To activate Safe Mode, click the Firefox menu, point to Help, and select Restart with Add-ons Disabled. You can also enter Safe Mode by holding the Shift key while starting Firefox.
Try using Safe Mode for a while if Firefox is crashing. If Safe Mode works properly, the problem is with one of your add-ons. You may want to leave Safe Mode and disable add-ons one-by-one until you identify the add-on causing the problem.
Firefox stores your personal data in a profile folder. Problems can occur with your profile folder, but you do not have to waste time identifying and fixing the exact cause. Firefox’s Reset feature will create a new profile folder, migrating over your bookmarks, browser history, saved passwords, cookies, and auto-fill information.
You will lose your extensions, themes, search engines, and site-specific preferences when you reset Firefox. Extensions and themes in particular can cause crashes, so getting rid of them and starting from a clean profile can be helpful.
To reset Firefox to its default state, open the Firefox menu, point to Help, and select Troubleshooting Information.
Disable Hardware Acceleration
Firefox’s hardware acceleration feature uses your computer’s graphics card to render text and objects on web pages. This speeds up web page rendering and takes some load off your CPU. However, hardware acceleration can cause problems with some graphics drivers and graphics cards.
You can determine whether hardware acceleration is the problem by disabling it. To do so, click the Firefox button and select Options. Click the Advanced icon and uncheck the Use hardware acceleration when available checkbox.
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