SYSTEM:
OS: OSX 10.14.3
Software: Blender 2.80 (2.80 2019-02-08, Blender Foundation)
ProRender version: 2.0.1 

Test Blender File:
pyramid.blend01.blend

GPU Setup:
EGPU Chassis: Razer Core X
eGPU: AMD Radeon Pro WX 7100 (Metal)

AMD PR RESULTS:
Viewport - render worked
Render Image - crashes blender within ~1-2 seconds