I added a train model to the game; when you rotate the camera, parts of it turn black in some places. Why is that? How can I get rid of this? I can’t figure it out for 2 days now 
Video
I Think That Has Something To Do With The Post-Processing, Specifically Auto-Exposure, Try Disabling it, It’ll Maybe Work
no, I’ve already turned it off
Or Maybe Ambient Occlusion, Try Disabling That Instead, it’s in the post-processing