It was the lens profil activation.
Tried to activate lens profile in LR also, and the file got smaller there too.
My next question is :
i tried the keystone in C1 and after that the keystone lines are showing up on every pictures.
I am not able to remove those lines.
There is no hide/show those lines in the menu.
C1 hangs and chrash so often that I think I will use LR4 more and more.