Comment I run Debian and i3 / Sway (Score 3, Interesting) 6
on all my machines. Once you get past the tiled window manager paradigm - if you've never used one before - you realize how fast and seamless it is, and it truly is the least common denominator in terms of memory usage.
I left Mint (which is really a Ubuntu derivative) years ago, and now i3 / Sway let I have the same unified desktop on all my machines, fast or slow, new or old, and they all feel perfectly usable.
I highly recommend spending the time to create a i3 or Sway config file. It's well worth the effort and it's a one-off.
And if you just want to try i3 or Sway on your existing distro, install it and simply change the Window manager for your user in the display manager: it lives totally independently of whatever your currently use, so it's risk-free.