I tried rating my computer using WEI the other day. I started the program an left the room, came back 5 minutes later and it was still at rating direct x performance (I don't know the exact name but it was one of the very first things it rates). Basically it never made it past the graphics card portion of the test. It said it allowed the maximum amount of time to complete the test and failed.
I'm thinking its a graphics card issue or a driver issue. I have the latest 12.6 Catalyst.