This is the best desktop environment and I will never switch.
LXQT X11 + OpenBox
Because computing should be fast and instant and you should be able to set keybinds to close windows and maximize them instantly.
When running a 3D video game, steam and firefox on my PC at 1080p as shown in QPS it only uses 3.5GB of RAM out of 16GB and my CPU which is a common quad core only uses 4% CPU usage TOTAL!
With just firefox and steam running in the background with regular usage, the computer only uses 1.5GB and 0.3% CPU usage.
On a fresh boot it's 650mb RAM with 0.1% CPU usage.
This is peak computing, Anything else is bloat.