You're very welcome, Chum!
Select the Polygon object, and go to Object Manager> Object> Object Information. 2506 Points. Close that message window.
Then, use the optimize function.
After that, go again to the Object Information: 2468 Point.
Somehow, there was twice the information in some areas.
How did I got there? Gut-feeling. There is no logic or previous case that acted in that way.
The Delta Smooth was working after that. Which I think was the target.