I find that IClone uses all the cores on my system to export an Indigo sequence. However Iclone is very frugal when comes to the use of the gpu. That said this is the least of my problems pertaining to the Indigo plug, at least for myself. It would seem that on my system, Iclone uses every bit of ram as it builds a sequence and retains it in ram. This results in a IClone crash before it can finish a sequence. The higher the frame size the fewer the frames before crashing. To date 20 frames at 1920x1080 at 60fps is the top record I have. Myself I have Indigo on a separate machine that renders Indigo images as needed allowing me to work uninterrupted.