some kind of scale issue, I don’t have time to dig but in the example the columns texture gets more complex as the columns get farther from the camera

and the scale of the scene is nothing like real sized (10x6x15 cm) so I scaled it up 250-ish times to something that might be real-world scale and it looks like this.

The material you are using was probably made a while ago when the default scale was meters or just made/tested on real world scale objects.