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Firefox is lagging and not refreshing fast enough

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I noticed this first with a Google Sheet that was slow to update. It seems to be getting worse and when I have multiple tabs, many do not refresh. Additionally, when I am looking at a page like Google News and scroll down, many times the entire center column is a black box and does not always load images.

I have tried refreshing and it did not help. I started in Safe Mode and it seems to be much better so I am guessing it is a problem with add-ins? I am currently scanning for malware as well.

Any suggestions?

Réiteach roghnaithe

You can try to disable hardware acceleration in Firefox.

  • Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"

You need to close and restart Firefox after toggling this setting.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window
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Réiteach Roghnaithe

You can try to disable hardware acceleration in Firefox.

  • Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"

You need to close and restart Firefox after toggling this setting.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window
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Disabling hardware acceleration seemed to work for me

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Just as an update, after investigation of general hardware acceleration issues there is an update going out today that should resolve this. The new version will be 38.0.5 on beta on June 2nd *. Thank you for your patience, please do report back if there are any further issues.

(*please note the update in this post for the change in release channel also subject to change)

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