Question Android graphics go crazy when switching from Vulkan to OpenGLES3

Hello!

I've got a basic MARS-powered project up and running just fine on my iOS device. The main camera rotates around a 3D scene, and the MARS camera does some basic face landmark tracking.

The problems began when I tried building for an Android device (Galaxy Tab S3). I know supporting ARCore requires removing Vulkan from the Graphics APIs list; I did so, leaving OpenGLES3. When I run on my device, the graphics look fine for a fraction of a second, then become this weird mess – all light sources are disabled, and some opaque objects become sort of transparent.

I've done plenty of googling to no avail. Any help at all would be appreciated!

(Disclaimer: Have only been using Unity for a few months. Have only been using MARS for a few days. Have never developed for Android before.)