I personally have been using "Auto Tab Discard" for years. It works perfectly for me, and you can set a group of tabs to not unload. It has a ton of options. I

I personally have been using "Auto Tab Discard" for years. It works perfectly for me, and you can set a group of tabs to not unload. It has a ton of options. I have ~320 tabs open right now, for multiple projects and only ~5 are loaded. https://addons.mozilla.org/en-US/firefox/addon/auto-tab-discard/ https://addons.mozilla.org/en-US/firefox/addon/auto-tab-disc...