Strange Geometry Rendering Issue in PC Build, Many Colors

Hello Everyone,

I've been trying to combat this issue for a few weeks and I'm really at a loss. Let me start with some background info:

1. Very large map, filled with geometry, the size of a small city.
2. Project was in Unity 2017.3.1 a year ago and it played in the Editor and build (Windows 2D) just fine.
3. About a year ago I updated the project to Unity 2018.3.10; Everything in the Unity editor rendered and played fine.
4. Four months ago I updated the project to Unity 2019.1.2; I never needed to make a 2D Windows build until now (for the client)
5. When I play the build executable, I get the strangest of rendering errors I have ever seen, the buildings are colored and it looks like the skybox (cubemap) is messed up:




Steps tried to resolve:

At first I thought this was a unity 2019 issue, so I upgraded to a later version. Didn't work. Then I went back to my 2018 version and tried building, same issue. That's when I realized that when I upgraded a year ago, that's when this problem was probably created but I never needed to make a windows 2D build and everything works perfectly in the editor so I didn't catch it until now.

so then I:

1. Reset Graphics settings
2. Investigated if shaders were causing the problem (Not that I can tell)
3. Switched from Gamma to Linear color space
4. Re-confirmed that autographics was checked, it selected sRGB (compared this to the 2017 version of the project I have still)
5. Camera: I have tried many combinations of:
-- Uncheck Allow MSAA
-- Rendering Path = Auto, Deferred, and Forward
6. Check lighting settings (nothing out of the ordinary)
7. Tried 3 different computers (thinking a graphics card or software issue), same issue happened on all 3.

Still haven't found a fix. I spent a few hours researching many different ways for this issue and found nothing. Has anyone seen this before??

The project works totally fine in the Unity editor on any version when I click play; It's only when I build to an .exe that I get this issue...

Thank you

 

So I was just browsing through this forum and found this:
https://forum.unity.com/threads/bug-4gb-limit-to-textures-in-standalone-build.441116/

This was my issue, asset file of textures larger than 4GB. What a terrible system and so much wasted time.

I feel so lucky I even decided to click and read through that thread... I'll leave this up in case anyone from Google/search finds it.

Have a great week everyone.