It was highly recommended in other browsers, although Chrome / Chromium already has Memory Saver (://settings/performance OR ://settings/system etc.) and even Opera has known this for a long time... And Firefox's great strength is, in principle, precisely the so in principle, this plugin should not be used to manage tabs, but since Firefox has been consuming an unusually large amount of memory recently, I tried it for testing and *** the browser was successful: new tabs were no longer loaded, the little dot moved here and there. Inactivation was not enough, the "ZZZ" icon was violently displayed on the tabs! I removed it.
And since then the ears have not been filled. "Damn good." Must reinstall. ***