Hi,
I have a similare problem:
More than 4mn of parsing scene, every time I stop the IR and restart it, it's TOO LONG!!!
Corona is very badly handling the memory, I have a out of memory on a scene of architecture with some grass and 10 trees, yet I have 32gb of Ram and only 54% are used. There's an inconsistency somewhere, right? Tonight I made a rendering and C4D had bugged at the end of 3H30 and impossible to save the rendering, it's INTOLERABLE!!!