Hi everyone.

P.S LOL! LOL!

I think I made a big "mathematical" error in my very first post :)

I have reported a wrong number of total control points.

This is the correct values :

In both files I replicated a "block" composed of 9 planar curves for a total of 179 control points.

1) Scene 1
400 "blocks" for a total of 3600 planar curves and an total of 71600 control points (NOT 286400)

Total elaboration time : about 6 secs THIS WAS ALREADY CORRECT

2) Scene 2
1600 "blocks" for a total of 14400 planar curves and an total of 286400 control points (NOT 2577600)

Total elaboration time : about 23 secs THIS WAS ALREADY CORRECT

Ciao!