I run Endless Legend and Humankind. Please give us the optimal settings for running two graphics cards in AMD's Crossfire mode! The possible modes listed in AMD's Adrenaline Edition software are (1) Disabled (2) Default Mode (3) AFR Friendly (4) Optimize 1x1, and (5) AFR Compatible.

My PC is homebuilt, based around a Gigabyte gaming motherboard. The graphics cards are two Radeon RX 570 units. Any other recommended settings or procedures for finding them would be greatly appreciated!