This project runs very slowly, please run it on Turbowarp Link here - https://turbowarp.org/806268795?fps=240&hqpen press W to move the camera forwards press S to move the camera backwards after changing the 'mesh #' variable, click on the green flag to change the mesh. The higher you put the mesh triangle, the worse it renders (Don't set it to 4 trust me) changing the 'auto rotation?' variable to zero will make you be able to rotate it with your mouse (finger on mobile) for the cat mesh, if you go back far enough, you will see the polygon count drop and the cat looking a bit worse, this is called the level of detail. This is when you make something a bit worse when it is far away in order to save on performance
For now, if the mesh goes behind the camera, it will render in front of the camera and it will look bugged