it would be very useful a clean dwg export from Archicad.
Specially when many fills are used dwg export is very "dirty" so that autocad users complaint about the drawings we passed to them.
I hope GS implement an automatic and hidden (but also manageable) "lines and fills consolidation" before every translation to dwg (or other formats) in order to have few superimposed items (lines above lines above lines and fills above fills above fills) ...
AC 19 and AC21 latest hotfix
Win 10 Pro 64bit
Double XEON 14 CORES (tot 28 physical cores)
32GB RAM - SSD 256GB - Nvidia Quadro K620
Display DELL 25'' 2560x1440