I’ve been noticing some weird behaviour in Blender. When I import some objects via File>>Append… it works ok; but when I press F12 to render the picture, it takes ages to START drawing the first line; furthermore, the render speed drops.
I’ve tried to import different scenes from different ones as well and it always happens the same. I initially thought that it would be due to increasing complexity. But then I realized that a terribly complex scene made without appending stuff rendered much much faster than a much simpler scene that had a part of it appended.
So what I was suspecting had kinda proven: the append process must do something that slows renders dramatically down.