Who knows how to fix this 3d model of a building

Quick Summary

I would like to know if anyone have any idea what might be causing the following issue. This problem only appears on the IPad build. Everything renders well on the unity editor, but not when i make a build on the ipad

Details of issue
Situation and Error reproduction

When I create a build I have observed that when I use Engine strip code, which is under
build settings > player settings > inspector > optimization
The issue of the 3D rendering does not exists, but it breaks many of my features, so I cannot enable Engine strip code as a solution.

When I create an IOS build with Engine strip code disabled all my features except the 3D rendering of the building works as desired.

The problem

On the Ipad when I enter the 3d scene I can see the environment I have created, but it all looks just like a single frame (the first) frozen and fused with the background. When I move the camera around the main focus point (which is a building, lets call it main building) I see the 3D model of the main building rotating (as it should) but the building is stripped of any details that comes with it. While at the same time, I have that initial frame, background like image, staying and overlapping the expected scene. But the crazy thing is when I move the camera to a specific location, I can see the whole building and the surrounding being rendered correctly!
In other words with certain camera angle only transparent objects of the main building are showing, overlapped by the first frame background (not the desired result). Where as with the other angles everything else is showing (the surrounding environment, building as it should be) See the gif for example.

![This is the gif of the issue][1] [1]: https://giphy.com/gifs/unity-3d-model-glitch-JqyAx4Wy4xHbCKe7UH

I will really appreciate it if people can help me with this issue.