In my opinion, FreeCAD is a mess to deal with, based upon my personal experiences dealing with it.
What OS should I run? …I can run any version of Windoze in a VitualBox.
What FreeCAD version should I run with that OS?
I’m having more problems with the currently listed stable than I am with the last weekly AppImage build.
Problems? Crashes/Freezes/Missing Claimed Feature Functions.
Can anyone point me to a FreeCad/KiCadStepUp Linux Version without significant problems?