AviatorMoser

This isn't really a mesh bug, but rather a conflict of the old inaccurate airport's elevation with the more the accurate mesh. For South America, I highly recommend FTX Vectors that help correct these airport elevations. I personally won't be updating airport elevations because of resources and time.
 
SENL with FTX Vectors:
 

 
SEMC with FTX Vectors:
 

 
SESM with FTX Vectors:
 

The 1.0 files should be overwritten. That's okay.

Hey be77solo,
 
The airports have inaccurate elevations (and sometimes placement) so they will look odd with FMX. A solution is find a 3rd party airport file that correct these airports.
 
I'm personally a fan of these two free scenery.
 
TFFJ: Replaces the whole island. http://marcoh.gratisim.fr/stbarth_en.html (very nice)
 
TNCS: PW sceneries Vol.5: http://www.strikingsoftware.com/pws.shtml (an improvement but not perfect)

I accidentally created the torrent without trackers (the others have a tracker), so that's why it probably gives you a torrent not found error. However, it certainly works fine without the tracker as I have uploaded about 25 GB of patch 1.01 alone. I'll upload a new torrent with trackers though.

Check the MyTraffic Professional installation folder. Inside there is a scenery folder loaded with updated airport AFCADS. Search for your airport codes and move them into a separate folder.

Obviously, FSX:SE kills off AI traffic to boost performance.
 

 
Obviously, FSX:SE kills off clouds just for the heck of it.
 

 
Obviously, FSX:SE neutered autogen to give me 58 FPS.
 
Conclusions: FSX:SE is just one giant placebo pill. It's not actually there. You didn't purchase it for 5 placebo dollars. You took the blue pill instead of the red pill, and now the last two months has been a power trip inside the Matrix because we prefer bliss and ignorance over reality. The machines won.