Hello, As a quick note, since the UX update, Firefox has become one of the heaviest browsers, overtaking chromium/google chrome. Yes expect each tab to take anywhere between 500mb to 1gb of memory, this is not a bug this is literally how heavy (bloated, if you want to say it) firefox has become. If you dislike the resource use, along with the sluggishness of the Firefox UX improvements (and the ever increasing resource requirements each update) move to chromium (or ungoogled chromium). Unfortunately I am seeing the same issues with the most recent update to thunderbird which improved its UX, its now become very sluggish and the animations slow down your workflow. It is safe to say Mozilla is trying to suit the demands of the average internet user, having flashy, fancy browser, instead of the lightweight, open source, versatile browser of the past. Mozilla has not been trustworthy for over a year now, with the integration of tracking such as pocket (saving your personal data to mozilla cloud) along with the Mozilla VPN they keep trying to urge you to use to track even more of your data, and even the Firefox android app which has vast amounts of proprietary blobs in it, the question is not "How do we fix this", it is "What do we move to?". The web is currently on fire, and I am not going to spark a debate on "Use Brave" or "Use chromium", or the upcoming potential implementation of vast internet DRM which would also knock out most open source browsers. For now I have found that chromium is still a compelling choice, and if you want it even more private use ungoogled chromium. Personally I am continuing to use Thunderbird and Firefox because it is what I am used to using, but since the UI change of Thunderbird I have wanted to jump ship, and since they did it to Firefox I wanted to jump ship too, but to where? It seems we are backed into a corner yet again, and the companies we put our faith and donations into are letting us down. As of this moment, I am running "Mozilla Firefox 116.0.2" with 5 browser tabs open, at about 1-2GB of memory use. I can not reproduce the same level of memory use, are you sure it is not the websites you had open? Take care, -- Polarian GPG signature: 0770E5312238C760 Website: https://polarian.dev JID/XMPP: polarian@icebound.dev