@mk1 :
I don't knwo , caus it's lot lot of programming stuff.
For now, i move to Blender 3D blocks instead of 3D tiles.
Perhaps i'll return back to editor if i don't get enought good results ?
Fisrt level :
I find it somewaht strange by using 3D repetitive blocks instead of 3D Tiles ?
I'll have to put assets like grass, trees, rocks to see if it turns better visually ?