I am starting to get this message these last days (less than a week).
Usually, I am doing a copy / paste of simple data (a file name) within TextEdit and this one freeze until it quits and show this window.
Always using the displayed applications (plus TextEdit); I had Opera open minutes ago when the window first appeared.
Last Monterey, Firefox, Xojo 21r2.1.
well firefox is (as always) eating a good part of the memoryā¦
Yes (for both).
But unable to copy less than 30 text charactersā¦
Cāest fort de cafĆ©.
After 4.5 hours of work (live text, download data - images jpg, archives, copy/paste text, running the Xojo projectā¦, decompress rar archivesā¦).
Maybe a reboot will be able to reset the trouble ?
If the window appears once more I will try that (I already left my project and Xojo from running).
Just close your Firefox, then, when reopening it, use it properly, as not having 10 useless tabs open.
thatās for similar problems (slowdowns, ram usage) that I left firefox for opera a few years ago.
it was difficult at the time, but I donāt regret it ā¦
Opera has been opened weeks ago on my macbookproā¦
Argh !!! If only 10 open tabs !
I have 29 windows with multiple opened Tabs each !
Iām under Firefox with 10 tabs opened on 8 different websites, 2 YouTube videos and 1 music stream and itās using only 1.3GB. Firefox using 4.95GB seems like an INSANELY high amount of RAM unless all those tabs are 4K video streams or something. I would reboot if I were you! 
As Jean-Yves already said, this is common (possible) with FireFox.
Also, I am accustomed with this amount of used RAM.
Probably no You Tube, no stream (no music) all informations tabs, some from local disk most of all from the www.
Iāve never seen such a high amount of RAM used by Firefox here. Iāve been using it for 15 years. I sometimes leave my computers running with Firefox open for months, although when there is an update, I restart Firefox, but it usually goes for weeks without updates and itās open 24/7.
If youād like to solve your issue and itās not already done, you might want to consider installing an ad blocker (e.g. uBlock Origin or AdBlock Plus). This will greatly reduce the amount of RAM each web page takes (this suggestion is valid for any browser, not just Firefox).
On another note, I find it weird that Apple sells premium laptops in 2022 with only 8GB of RAM. This seems very, very low by todayās standards. My 10 years old PC has 32GB of RAM and although it does not even use half of it because Iām under Windows 7, I think 12GB is really a minimum for modern OSāes, especially if you watch 4K streams, which I cannot do here on 4.5mbps internet, but Iām sure 99% of readers here can
Apps on M1 Macs take 2.5x more RAM than their Intel versions, at least thatās what my tests with Xojo made applications have revealed. If it is true for all ARM based Mac apps, then I am not surprised.
Also what we donāt know is if Apple include their GPU cached textures in the application memory usage or not. With Appleās triple buffering, it makes sense. Each window is effectively is cached twice.
consider 8GB M1 Mac is equivalent to 16GB intel i7-i9 processor
Firefox
^ Thatās his problem. Itās called hoarding disorder. 
8GB is not enough for such āweb behaviorā.
As usual, you are correct.
But I work with this computer (and other before it) since feb 2020 and gradually add windows and tabs.
Now Monterey (or me ?) is starting to have troublesā¦
Yes, I will remove useless and duplicated tabs and windows.
Your computer, and you, will appreciate it.
Your browser have a tool called āBookmarksā (Marque-pages), that you can organize pages you may want to visit again, and you can create āfoldersā to organize them. Put those things there instead of keeping them open for ages without use. 
I used that - long time ago - too widely andā¦ never found what I was searching (like today).
Difference ? Used RAM.
The idea isā¦ I will go back there soon and āsoonāā¦ tooks timesā¦
Thanks for the tips.
I use the āAdd to Reading Listāā¦ but I honestly canāt remember the last time Iāve actually read one of those links 
Bookmarks have a part you can set a description of the content (Nom), and a search feature (Rechercher), so if you are looking for pages you collected in the past about āxojo local functionsā you can type āxo funā and it will appear in the list, then you just double click on it.
I agree. I make extensive use of this search behavior and I highly suggest it over opening all the bookmarks at once lol
TL;DR In a nutshell, you can name your bookmarks ANYTHING you want and instantly look them up by typing in the URL bar. No need to keep 27 tabs open, especially on a computer that only has 8GB of RAM in 2022 (!!)
For instance, letās say you are shopping for a lawn mower. You want to keep one lawn mower in particular in your bookmarks, but you fear you will lose it among a bunch other lawn mower bookmarks you made before, so what do you do? You name the bookmark āThe super nice oneā and then when you want to retrieve it, you can literally type any part of āThe super nice oneā in the URL bar e.g. I type āsuper niceā, just as if you would search on Google or whatever search engine and then Firefox (like most browsers) will suggest all the bookmarks that contain the keyword(s) you typed in the URL bar, so that lawn mower page you bookmarked before will appear at the top of the suggestions. You donāt have to remember anything about this super nice lawn mower, since you clearly named the bookmark to something you can easily remember (āThe super nice oneā).
