Do you use the same size in the UI_PICT-Command as the picture has?
If not, that could be the problem.
Another possibility is, that ArchiCAD does not save a clear picture.
In that case make a screeshot in the disired zoom size; for me this is a good solution.
Jochen Suehlo . AC12-27 . MAC OSX 14.4 . WIN11
GDL object creation:
b-prisma.de