Demanding benchmark that is included in the popular FPS, Metro 2033. The demo is a camera fly through in a subway tunnel. There are large amounts of gunfire, cloth and lighting effects. The demo has a number of noticeable slowdowns from heavy flame, fog and motion blur effects. We run the game on the DX11 code path.
One a single GPU we see a number of dips, similar to Far Cry 2. When running in CrossFire multi-GPU, I do see noticeable micro-stuttering.