If I can help even a few folks out there from making the mistake I did, uninstall Catalyst before installing the Mantle update! A friend messaged me that Mantle drivers were released. I downloaded the drivers and installed them right away, and I know lots of other people will do what I did there If you bother to actually read the instructions, which is something that patient people would do, you MUST uninstall Catalyst before this update. Since I got my r9 290 card like 2 months ago, I've just installed each beta update straight up, and have had zero driver issues. But this one is a must, man did I experience some weird **** trying to load Battlefield and even normal DX11 games... everything crashed.