I have been using xrdp on the “server” and remmina on the “clients”. Both ends worked beautifully “out of the box” (i.e. apt install). Occasionally I might have had to open the firewall for xrdp?

I never see this kind of stuff with XFCE. I run various flavors of Debian that do not go through Ubuntu.

One of my biggest gripes about Windows was updates, virus scans and compatibility scans running autonomously while I am trying to get stuff done, sucking up network, drive access and CPU. I didn’t need Ubuntu doing the same thing to me - I want to kick off updates manually when I am taking a break for lunch or at the end of the day before shutdown.