I am also a victim of stubbornness when comes to using windows at work and again windows for my hobby (without falling in the trap of working for work, home)
So I bought the iMac 4k With AMD 560x (cheaper then 580x) → nok for Eevee (lokdev) = i am back on 2.79b
Take this cycles render that i made for my blog
Numbers:
Cycles 2.8 (only CPU dhaa) = 25:60 seconds (26 almost) (I have the i5 hexacore no hyperthread 4k iMac)
AMD ProRender CPU+GPU (AMD 560) = 41 seconds and just like they said above stuff is missing like making a simple gradient map on Z axis, it will not show in AMD Pro Render. Is 4 times slower than 1070 + i7 Quad x2 on ASUS ROG laptop (same price as iMac 4k with 560, in late 2019.)
LokDev = less than 1fps… meaning i have to wait until I push the keyboard for wireframe
(On a MacBook Pro 13inch with Intel integrated GPU i get max fps on LokDev on the exact same scene. But before i can rotate, work, animate i need to wait 2-4 seconds and then vruuum it is flying. Back on 2019 iMac with AmD 560x on the same scene, same loldev and my Blender is dead, waiting for display solid, wireframe or cycles)
Cycles 2.79b = 24 seconds (yep, faster and with Blender 2.80 forgotten in the background)
Display objects solid with GLSL material The lok dev that makes sens for MacOS users. Is fast, practical and helpful in preparing for the grand finale (render/animation)