4GB GTX 770. AWWWW YEEEEAHHH......
Between 100-120fps away from the ground, occasionally a little higher. However, down to around 55 moving along the ground with full 3D grass, with the rare harsh stutter spike and it says 40something for a moment. (Still generally goes farther down and has more stutter spikes with roads around.)
I figured out, before I switched the card, that my very frequent harsh stutters were due do Full Refresh vsync, so I turned it off, however I have yet to try half refresh. Obviously, I know nothing about how it's programmed, but in other games, vsync will lock you to 60fps or 30fps depending on how high your framerate is. However, this doesn't seem to do that when it gets below 60. At least that's what the fps says. Does it still only lock it to 60 even if it goes lower? The harsh stutters seem a lot more frequent than with vsync in other games.