- Official Post
To me it looks like the origin of these objects is incorrect but they have been modeled to still be on the ground with the default mesh?
To explain this again:
If you use autoheight true then all objects are shifted up and down by the terrain mesh that is loaded. The object origin is moved up and down according to the elevation at that point. If your object origin is not underneath the object the same code is still executed so you are requesting the elevation somewhere else which probably isn't the same elevation underneath the main part of your object geometry.
Multiple objects should remain as individual objects and should not be grouped together. Otherwise you will see some objects floating.