Firefox performance degradation – slow page load and occasional freezing

I am experiencing a noticeable performance drop in Firefox. Web pages are loading significantly slower than usual, and the browser occasionally becomes unresponsive for a few seconds. This issue started recently without any manual changes to settings or installation of new extensions. I have not yet performed deep troubleshooting, but I suspect it could be related to one of the following: High CPU or memory usage by Firefox processes Corrupted browser cache or profile Extension or add-on interference Hardware acceleration or graphics driver issues Background tabs or service worker activity I usually work in a healthcare billing environment Avenue Medical Billing Services, so I rely on a stable browser for accessing web-based tools and portals. That’s why I want to properly identify the root cause instead of random fixes. Can someone guide me on the best diagnostic steps to isolate this issue? Also, what internal tools (like about:performance or about:memory), logs, or testing methods should I use?