Hi,
Well, when using the Corona Renderer, in case of "Roofing styles", the
Use Instancing Engine option is by default disabled because of
Material /
UVW XForm Operators are used and these are just partially supported (as you can see in the
Feature Compatibility table) - to get these working correctly with the Corona Renderer, the
Use Instancing Engine should be switched off.
Please feel free to turn the
Use Instancing Engine option
ON (attaching screen-shot) which will improve the performance, just take in mind that
Material /
UVW XForm Operators will have no effect on instanced geometry.
Best regards,