thanks jespi and metin for your rapid answers!!
@ jespi:
jagged shadow: my fault: too high bump value: 100! (default!! for imported mxm) it becomes better with 10 or lower! (see images, value 10 for bump)
- no error messages while render or mat-preview updates
- mesh is enough subdivided (as I think) - also see images
@metin: yes, I am using centimeters for this test (i also thought that this is a scale problem, but I can not figure it out so far...)
BUT where are the textures....?
Best regards, Roman