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Youtube and other webpages EXTREMELY SLOW started today after 1 1/2 years of usage

Hayden N
Hayden N
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As the subject says Firefox very suddenly started giving me terrible loading times, despite all the sites working perfectly fine on other devices and browsers. Issue continued with troubleshooting mode, not sure where to go from here. I will open youtube, it won't load about 5 thumbnails, I click on a video and it sets it to 140p and then it still lags the entire video as if I was using 1kbps internet. I tested my wifi connection and its having no problems. Something similar happened when I used to use Opera GX, it was fine for a long time and then one day terrible performance. Please let me know where to go from here. Windows 11 Pro.

As the subject says Firefox very suddenly started giving me terrible loading times, despite all the sites working perfectly fine on other devices and browsers. Issue continued with troubleshooting mode, not sure where to go from here. I will open youtube, it won't load about 5 thumbnails, I click on a video and it sets it to 140p and then it still lags the entire video as if I was using 1kbps internet. I tested my wifi connection and its having no problems. Something similar happened when I used to use Opera GX, it was fine for a long time and then one day terrible performance. Please let me know where to go from here. Windows 11 Pro.

All Replies (2)

Hayden N
Hayden N Question owner
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I also tried refreshing it. That didn't do anything either. Is a reinstall the only option?

Helpful?

Dineal Margret
Dineal Margret
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If Firefox is experiencing slow loading times despite a good Wi-Fi connection, here are some steps to troubleshoot and potentially resolve the issue:

      1. 1. **Clear Cache and Cookies**: 
  - Go to `Options` > `Privacy & Security`.
  - Under `Cookies and Site Data`, click `Clear Data`.
  - Check both options and click `Clear`.
      1. 2. **Disable Hardware Acceleration**: 
  - Go to `Options` > `General`.
  - Scroll down to `Performance`.
  - Uncheck `Use recommended performance settings`, then uncheck `Use hardware acceleration when available`.
      1. 3. **Check for Add-ons**: 
  - In the menu, go to `Add-ons` > `Extensions`.
  - Disable all extensions to see if any are causing issues. If performance improves, enable them one by one to identify the culprit.
      1. 4. **Reset Firefox Settings**: 
  - Type `about:support` in the address bar and hit Enter.
  - Click on `Refresh Firefox...` to reset settings while keeping bookmarks and passwords.
      1. 5. **Update Firefox**: 
  - Ensure you’re running the latest version by going to `Help` > `About Firefox`, which will automatically check for updates.
      1. 6. **Check Network Settings**: 
  - In `Options` > `General`, scroll down to `Network Settings`.
  - Click on `Settings...` and ensure `No proxy` or `Use system proxy settings` is selected.
      1. 7. **Disable DNS Over HTTPS**: 
  - Go to `Options` > `General`.
  - Scroll down to `Network Settings`, click `Settings...`, and uncheck `Enable DNS over HTTPS`.
      1. 8. **Check Windows Firewall/Antivirus**: 
  - Ensure that your firewall or antivirus is not blocking Firefox. Temporarily disable them to see if it resolves the issue.
      1. 9. **Create a New Profile**: 
  - Open `about:profiles` in the address bar.
  - Create a new profile and launch Firefox with it to see if the problem persists.
      1. 10. **Reinstall Firefox**: 
  - If all else fails, consider uninstalling and then reinstalling Firefox. Ensure to back up your bookmarks and passwords if needed.

If these steps don’t resolve the issue, there may be a deeper conflict with your system, and it could be worth checking online forums or the Mozilla support page for more specialized assistance.

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