Renderissues when using AO in material + scaled objects

When you scale objects which have a material with AO as Diffuse we got some Renderissues.

to reproduce

  • Render Frame 0 in FB with IPR = everything is fine
  • Render Frame 0 in FB final = GI is really slow and passes need more time

macOS
Corona 4 HF1
C4D R20
190820 Corona BugReport AO scaling Renderproblem V01.c4d (263 KB)