I’m on EndeavourOS, too. I don’t see anything near that kind of memory drain, but I’ve been using window managers instead of desktop environments for a long time.
For ages I had old, poorly specced laptops, and the big DEs like KDE would quickly cap what memory I had for actual software. And I’m not even a gamer, this would be GIMP or a plain browser that would crash because of too little RAM.
Even now, with more memory and better CPU, I stuck to the habit of using a WM instead, and everything really just runs better. You do sacrifice some eye candy and built-in functions, but IMHO it’s worth the tradeoff.







FWIW, I use the OpenBox install of Endeavour OS, with a few simple tweaks of my own. As far as I know OpenBox isn’t actively maintained, but it Just Works™.