The post I made above is bit long, so here is my conclusion.
Inkscape seem to handles DXF output the best compared to Affinity Designer.
In Affinity Designer I would need to convert the text to Path and add outline to make DXF export work or you get blank file.
In Inkscape you do not need to do any other steps just save as DXF.
Here is an example:
Inkscape (type is not path but just type, it converts to path during save as.)
Settings change during save as
Shapr import
