Thanks, good to see likely-minded folks here 
. What I’m still working on is a thing about the feed rate (F codes): DXF2GCODE puts them on separate lines/commands, and somehow the machine does not like them (moving slow). Manually increasing the feed rate in Carbide Motion is the workaround, but I would like to find a proper solution.
There is a similar thing going on in the following discussion: Feed Rate Too Low - #7 by Julien