I have discovered some of the problem.
I have installed the repository at
https://github.com/bartacruz/scenery-cuyo which adds improvements to the terrain in the pampa of Argentina. These changes also add much more realistic buildings and constructions for Chile, including Santiago, which improves a lot (Terrain / w080s40). However, these changes in the terrain destroy the geography of the mountains and valleys of Chile.
Through UFO, I recognized every damaged tile in the mountains and replaced it with those from
https://cdn.merspieler.tk/, managing to repair it.
I left the Santiago tiles made by bartacruz, because it improves a lot (even the terrain repairs SCEL runway 17R, which was damaged), and I kept the changes made by V12 to SCEL.
Now there is a mix of repositories that leaves me quite satisfied, however there are still areas of the surrounding mountains and valleys damaged or looking strange.
SCEL airport, with more buildings and runway 17R without errors. Mix items added by V12 and the Bartacruz stage

The city of Santiago with more buildings and precision. with the scenery of bartacruz.

Aerial view. the city and the green land is what is obtained from the bartacruz scenario. The rest is the merspieler setting or the default terrain, which in the mountains is much more accurate, but not so the city.
