Halo Wars 2 DX12 mGPU flickering

Hey everyone,

Played some Halo Wars 2 on PC with some friends last night. To my surprise, I looked over at my PC and both of my GPUs were being utilized equally (they have a LED tachometer so I can see when there is activity)

A few games in, and trying to use the AMD Radeon Overlay, I eventually got some severe flickering issues that forced me to restart the game. The weird thing is, the mGPU performance in the beginning was amazing, 140FPS+. I’m not sure if it was playing multiple games, or using the overlay that caused the flickering. I also ran task manager on my other monitor, which I remembered has caused mGPU issues on other games, too (Gears of War 4) But I did a search and saw some old threads about mGPU flickering, so I figured I would create a post.

Anybody else getting flickering? Anything I should try? I know some games ask you to turn off anti-aliasing, does Halo Wars 2 have any gotchas like that?

Here’s my setup:

> AMD Ryzen 7 2700X
> AMD Radeon RX Vega 56 (x2)
> ASRock X370 Gaming K4
> G.Skill TridentZ 16GB DDR4-3200 C14
> Seasonic Focus Plus Gold 1000w PSU
> Crucial MX500 SSD