I have four square planes cloned radially to create a square tunnel, and then that tunnel cloned linearly to increase its length. The material being applied to each plane has a displacement map using sub-polygon displacement with a subdivision level of 8 to create details on the tunnel. Whenever I go to render a frame in the animation, I notice that the render buckets quickly work their way around the image except for one at the very center, which stays there long after all the others have finished (and hence only one thread is working on that section):
I assume this is because there is so much geometry at the very center because the tunnel is cloned to be so long. I’m wondering if there is any way to speed this up without actually changing the geometry of the scene; of course I could decrease the number of clones or reduce the sub-polygon displacement subdivision level, but those lead to other problems. Is there some other way to speed this up?
I am using the standard renderer.