Driver Version: 18.4.1
2 x R9 390
AMD Ryzen 1600
8GB DDR4 RAM
MSI AM4 B350 motherboard (BIOS: MSI click bios 5)
Corsair Gold 850 Watt PSU
Display: AOC 2540x1440p IPS Panel
Acer 1920x1080p monitor
Hi, I just discovered, only one of my graphics cards is being used, both definitely work and both are detected and show in device manager, and I can swap between them by plugging my main monitor into either card. When I run a game, if I look in Task manager or GPU-Z one card shows it is maxed out at 100% usage and the other shows 0% usage, GPU-Z also tells me this and that crossfire is disabled but there is no option to enable it in radeon settings. R9 390s do not need a crossfire bridge and there is no slot for one. I'm certain my motherboard supports crossfire/dual gpus or whatever, but I can't get the other second one to be used. MSI Afterburner shows the second card as "Synchronized with Master."
I get the same fps after removing one of the cards, I also know the second one isn't working as I can hear the fans when it is working i.e.- when I reboot my PC or plug my monitor into it.
I have tried:
-Wiping and reinstalling drivers.
-Swapping the cards round.
-Looking in the BIOS but nothing shows up there about GPUs.
-Disabling ULPS in RegEdit
-Trying to enable crossfire but I have no option to enable it. (Spent ages looking online how)
-Getting really angry and hitting my desk really hard.