Good morning,

I'm back home and tried to render again. Well, the results were the following according to the task-manager:
CPU efficiency 100%
swapfile 0,99 - 1GB

Have I checked the right facts? 
Actually, right before the application shuts down, the kernel-times increased up to 50% of the CPU efficiency.
Perhaps I should stop importing several car. files with models I've completed before and instead load them as objects from the browser. Well, I'm already recreating the whole scene and hopefully it ends up well when rendering.

~Sassy~