Whonix-Workstation with 768 MB RAM konsole gets very slowly responsive after starting Tor Browser in Whonix 14 development version (not yet uploaded, but probably soon).
Therefore temporarily set RAM to 1024 MB RAM. Might be permanent, though.
Depends on if we find solutions to reduce RAM usage. I suspect nothing that Whonix does eats a lot RAM. Suspect is KDE.
I’ve seen KDE run on odroid C2. Even small devices nowadays have 2 GB RAM. I fear it may not be possible to keep it at 768 MB RAM usage.
Discussions about KDE vs GNOME vs LXDE vs any desktop envrionemnt should go to their own thread. Please concentrate in this thread on RAM reduction that does not involve big changes which are not doable for Whonix 14, which is already very delayed in its release cycle.