I have a fairly complex scene, ICE simuliation with Instances.
I’m rendering without motion blur in scanline, and the memory limit and secondary rays are turned off.
This is my question.
My render time for each frame grows exponentially.
For the first dozen to tewnty frames my render times stay consistent. 1 min to 2 min, but slowly the time increases to 5, 10,17 minutes.
The amount of computation needed is not the issue. I can shut down the program and restart, and upon the restart, a frame that would have taken 20 min will render in less than a minute.
I’ve checked some other forums, and it looks like it’s a mental ray issue with set instance geometry node in ICE.
I have animation on my instance and need variation of the animation on my instances, so I don’t think I can use the shape instance node instead.
Any help is greatly appreciated.
Thanks

One possible workaround is to have several different master objects, each with animation offset from each other. Put them in a group, and instantiate members of that group randomly.