You can't print a 0.4mm layer thickness with a 0.4mm nozzle. There is nothing to squash the molten plastic to the print surface. Layer thickness should be limited to no more than about 75% of nozzle diameter, and less, typically around 50%, is better.
You also can't print lines that are narrower than the nozzle diameter.
Ultra MegaMax Dominator 3D printer: [
drmrehorst.blogspot.com]