I use the XFCE version, it’s around 400 MB idle, fluxbox should be even less I think.

It’s most probably IBM forcing it, but yeah it’s dumb.

Fantastic news! thanks

beware NVIDIA tho:

However, Valve notes the fact that enabling hardware acceleration on NVIDIA GPUs may cause X11 to crash. As such, hardware acceleration will be disabled by default for NVIDIA systems. In addition, Valve says that DPI scaling may not work correctly when hardware acceleration is disabled.