Guif0DA
Do you want to
A. create tiles of whole map?
B. only tiles nearby character will be created?
In case A, it has to run a lot of actions, so it is impossible to create whole map instantly. You might try to set tile invisible when creating, and set visible when all actions finished.
In case B, you might try my another plugin - logic mask. It can help you create sprites inside an area, and destroy sprites when left this area.