Fóram Tacaíochta Firefox

I am having severe issues with unresponsive scripts and Firefox not responding. Once the scripts stop responding on one page, it spreads to the others I have open. I've cleared cache/cookies/data, I've gone into the configuration and changed the seconds to see if the script will complete, and I've tried the recommended extension (Javascript stop and go?), but then web pages won't load. I'm at a loss as to what else to do. Could this be a malware/virus issue?

The browser also stops responding, and once it gets started, it keeps doing so to the point I can't use the browser.

I am facing two issues with Firefox. I am using Firefox on Macbook Pro 2017 with i7 processor and 16GB Ram, but after importing all my bookmarks from chrome its laggy like when i move mouse hover the bookmarks its animation response time is slow ie :- Moving cursor up and down the blue animation strip its bit delay comparatively mouse cursor movement.

Secondly i am having issue with YouTube, when i am double click on YouTube video to full-screen its give blank screen for a sec its bit annoying i think it need to fix.

About:performance results. As an aside help section says About:performance should show up in menu/more and it does not. Do not care about that one but the slow loading of pages , twenty to thirty seconds vs. less than 1 on other browser and sister machine are driving us to another browser.

Michigan Weather Radar | AccuWeather may currently be slowing down Firefox.

MI Weather and Radar Map - The Weather Channel | Weather.com may currently be slowing down Firefox

No may be about it, yes they are. Used to load in a blink and still do in Edge browser and on sister machine.