Also the X axis is flipped so stuff like signs appear backwards other than that, this add on is the best for 3d.
Viewing post in C3 3D Mesh, 3D Vertex Light, 3D Physics - SDK V2 comments
https://kindeyegames.itch.io/c3-3d-bundle/devlog/1517507/add-flip-v-texure-coord...
The C3 3D Model plugin has the same issue of flipping.