Random render times

[hell-raiser]

I am puzzled: I got that animation of a character walking up to the camera, and my render times exploded from 2 minutes to 1 hour 2 minutes.

So I went back to the project, pulled up a region at high quality and with the render-options, and it rendered in 2 minutes. I rendered a preview ( at a lower res than the region) and it took 12 minutes. Then I deactivated the grid it was walking on: canceled rendering after 20 minutes. reactivated the grid: 32 seconds.

Hey, it