RTF is a global modification that replaces all towns in the game.

This is a riddle with no answer; I would say the density is high, but no, because then the sleeves wouldn't disintegrate like that.

Is this somehow related to moving the camera closer to or further away from the models? Like, if you move the camera further away, everything is visible, but if you zoom in a lot, part of it disappears?

Added after 31 minutes
And can you send the file that can be opened in an editor so I can take a look?