I have two R9 290
Card 1: Saphire Radeon Reference card R9 290
Card 2: Power Color R9 290
RAM: G-Skill 16gb 2400mhz
MB: Gigabyte GA-F2A88X-D3H
PSU: Corsair AX860i
If I am using just 1 card, all my games run great, high FPS etc (example: Guildwars 2 runs at 80fps with a single card, doesnt matter which one).
If I run both cards in crossfire, i drop by 20-60 fps in all games.
I have read through these forums, tried everything that has been suggested, reinstalled/uninstalled with DDU with no change.
Any help would be greatly appreciated as I do not know what else to do.