I have a TRI-X R9 290X. When I start my PC, and I do a Valley benchmark, I only get around 1700. When I reboot my PC, I get around 2570. This is always the case and I don't know if this is a card issue or a driver issue. I run on Catalyst 14.1. I also tested to play BF4 when I start my PC and when I reboot. Same case: first time only around 60/70 fps, after reboot around 100/120 fps.