Are you going to fix the error message in this junk version of firefox?
Every computer I run with Firefox 54.0.1, regardless of the web page I'm trying to access, runs slower than IE, gives me a script error message (something like 'A script on a page is slowing your blah blah down'). I run Duck Duck Go on a couple of machines (I have 8 running at any given time: I run a home studio). I used to be a huge fan of Firefox but you're ruining it for me. I've disabled all the add-ons, done everything al of the forums tell me to and nothing works. You're going to lose a loyal customer if you don' get your defecation in sequence.
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Suggest hang in there as version 55 beta is now very close to a final version. I am sure this will be addressed. I feel the frustration. Note: THAT Firefox 55 is due AUG 8th there or about ******
Since have lots of machines could try a beta version on 1. https://www.mozilla.org/en-US/firefox/channel/desktop/ this 55.11 Stable Release, but are at .15; so soon.
Can try this : https://support.mozilla.org/en-US/kb/warning-unresponsive-script
Also you have said you have tried things so a list of those would be great so we do not repeat things.
Unfortunately not enough info came with your question . Please list plug-ins/Extensions and also your AV program, It is known various AV/Firewall companies are having issues with your question and Firefox
Please let us know if this solved your issue or if need further assistance.
Novain'i Shadow110 t@
Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.
- switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
- do NOT click the "Refresh Firefox" button on the Safe Mode start window
- https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
- https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems
When multi-process windows in Firefox is enabled then Firefox will use more memory and may be less responsive.
You can try this to see if it has effect:
- set dom.ipc.processCount to 1 if it is currently set to a higher value (4)
- disable multi-process windows in Firefox
You can disable multi-process windows in Firefox by setting these prefs to false on the about:config page.
- browser.tabs.remote.autostart = false
- browser.tabs.remote.autostart.2 = false
You can open the about:config page: via the location/address bar. You can accept the warning and click "I'll be careful" to continue.