My hypothesis was correct. Building at this location, shown at C-9, causes crashes. I’ve tested it repeatedly in single-player. I also witnessed an online server that found a way to remove this NPC to solve the issue. I’m not sure how they did it because they refused to share. I assume there’s an option for it in the settings somewhere. I need to look into it further. I’m unsure if this is the only problematic location, or if there are others. This is the only one where there was a conflict on my server.