Let’s address the elephant in the workshop. While Jingdiao sells new machines with JDSoft ArtForm (a modern successor), the price of a legitimate license can be prohibitive for small hobbyists or startup shops. JDPaint 5.19 has been widely distributed in the gray market. A stable, fully functional crack has existed for this version for over a decade. This lowered the barrier to entry for an entire generation of Chinese CNC operators.
5.19 is 32-bit; it cannot use more than 2GB of RAM. Reduce your model resolution. Go to Model -> Resolution -> Change from High (0.1mm) to Normal (0.3mm) . jdpaint 5.19