To follow up on this one: The triangulation of TINs in SU1 beta isn’t highly problematic cases like the above but also MSFS2024 native terraforming polygons.
The create an alternative to the known problem with bumpy TIN runways (see here: ) I figured it would be best to remove heightmaps altogether and use terraforming polygons instead. Not an option neither I’m afraid.
Sadly SU beta seriously messes with the falloffs around polygons. In this instance here I needed to create a terraforming polygon around a huge terminal that was previously done with heightmaps (as the TIN slope displayed from one end of the terminal simply doesn’t exist in real world as official DTM datasets show):
These are the results from a 250 meter falloff. You can see it simply doesn’t work as intended with TINs as they falloff way too soon following the triangulation of the TIN instead of the edge of the terraforming polygon: