Question about sudden high CPU usage on the beginning Thread - StaudSoft's Synthetic World

I'm currently new to Synthetic World i'm gonna ask about peformance problem (actually i don't know how i should say it)

On the beginning of the game (When creating a New World) CPU usage suddenly become 100%,Yes i'm also aware that you already put a warning below it.
and what i know from the loading screen that it's doing something with "mesh" or something (Because actually i don't know what it really mean).It means it doing something with Graphic stuff right (Correct me if i'm wrong) ? why don't you put the load to the CPU instead to the GPU ?

Sorry for such a question,i'm really really new about this thing.

Thankyou,and please correct me if i'm wrong

Sorry for the late reply. Ok I originally used some brute force algorithm which could be easily move to gpu. But it was simply to slow. My new algorithm uses very complex data structures which can't be ported so easily to GPU. But I will keep the GPU thing in mind.