Hi,
I notice that rendering on a MacBook Air 16Gb only 4 cores render with a big model with lots of vegetation (6,7Gb swap used). Smaller models render using 8 cores with about 1,6 swap used. Corona render preparing the scene which takes rather long uses only one core. Is this all normal behaviour. Its a pity that only 4 cores are used when you would actually expect more cores at work in a larger model.
Another thing I notice that C4D layers set not to render just render all the same. I have to turn of render for specific geometry using the red dots in the object window.
For the rest it all renders rather fine on my MacBook Air M1. I am hoping for a better iMac soon with much more memory and cores. Modeling and rendering small stuff is very fluent on the MacBook Air M1.