I really wish they'd either quit focusing on all of these performance tweaks or at least focus as much on quality and compatibility.
They hit 120 fps on Dirt Showdown a long time ago, they must be aiming for 250 fps at 4k resolution.
And 4k resolutions are a huge waste of bandwidth, frame buffer, and fillrate considering all the artifacts there already are and considering that they don't reduce aliasing a damn bit.