With the majority of rendering I do for CAD models, the biggest killer is the accurate assemblies where everything is precisely located and this brings me to repeated parts. Consider fasteners or like parts.
When the model is exported from CAD, each ‘instance’ of a part becomes a discreet part that imports into C4D. For example, fastener in CAD would be fastener_1, fastener_2, fastener_3 and so on in C4D.
Is there a way to grab these like minded parts and convert them to an instance?