Incompatibility Between Unity and AMD Radeon Video Cards

I've installed and tested three separate video cards with Unity: a Geforce GTX 470, Radeon RX 580 GTS XXX, and Radeon R9 Fury.
The AMD video cards are not functioning properly inside of Unity, and please see my previous thread concerning my troubleshooting process (all software, including drivers, are up to date, etc.):
https://forum.unity.com/threads/video-card-updgrade-performing-pooly.607441/

I have been tinkering with the various graphics/display options within Unity to create a smooth development cycle, but nothing is working. Is there anyone else who is trying to develop with the current stable Unity release ( 2018.3) while using these Radeon video cards? And if so, are you having the same issues? Are there known or declared compatibility issues that have been mentioned by Unity?

Two links concerning known issues that I've found concerning Radeon video cards and Unity compatibility:
https://issuetracker.unity3d.com/is...layer-with-vsync-off-crashes-graphics-drivers

https://issuetracker.unity3d.com/is...led-in-createdirect3d11surfacefromdxgisurface

Thank you.

 

Hey, I've been hitting Unity problems with similar cards:
https://forum.unity.com/threads/radeon-rx-clients-crashing-on-white-screen-windows-10.611725/

I have yet to narrow down an exact cause of glitches, but am having serious problems. Hoping it's just a Radeon Bug, but no other games/software has been affected to my knowledge.
(Oh and the problem started happening BEFORE i upgraded from 2017.2 to 2017.3)