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.
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.
