Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
Open

Firefox lagging and high CPU spikes when managing e-commerce backend tools

Firefox App responsiveness
jbr replied 1 ọ̀sẹ̀ tó kọjá
thomasclark106234
thomasclark106234

Hi Mozilla Support Team,

I am experiencing severe browser lag and high CPU usage on Firefox specifically when managing complex backend forms and inventory management scripts on our e-commerce operations portal.

The page script execution freezes when opening multiple tabs alongside developer console tools. I have already cleared cache and disabled third-party extensions, but memory leaks still happen during heavy DOM rendering.

Is there a specific setting in about:config or hardware acceleration flag recommended for heavy web app environments?

Thanks!

Hi Mozilla Support Team, I am experiencing severe browser lag and high CPU usage on Firefox specifically when managing complex backend forms and inventory management scripts on our e-commerce operations portal. The page script execution freezes when opening multiple tabs alongside developer console tools. I have already cleared cache and disabled third-party extensions, but memory leaks still happen during heavy DOM rendering. Is there a specific setting in about:config or hardware acceleration flag recommended for heavy web app environments? Thanks!

All Replies (1)

jbr
jbr
  • Olúdásí mẹ́wà Òkè

So is it browser lag, CPU usage, or memory leak? And is it complex forms, or when opening multiple tabs along with developer console? Could you please attach a few profile captures profiler.firefox.com/docs where you see anything exhibiting this represented in the data?

Béèrè ìbéèrè

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.