All Game Assets Invisible Windows 10 But Not For Mac

All rendered assets (Terrain/BaseParts not hinges/motors oddly enough) on our game running from Windows (Tested on multiple machines) are completely invisible. But on Mac OS X they show up perfectly fine. Sending a downloaded copy to open locally had the same problem.

Bug was first noticed on July 2

Game Link:

Can you include screenshots of the differences? I am unable to notice any differences beside performance between my Clevo P650RS (i7 6820HK, GTX 1070) with Windows 10 and my Apple A1342 (Core 2 Duo P6800, GT 320M) with macOS Mojave.

Same camera angle

Image From:21%20AM

Image From:
and Graphic card: rx 580 8gb