I just got my Geforce GTX 970 and it's supposed to be great bang for bucks, but I still only get ~50 fps in stations. Might have to upgrade my CPU and motherboard / ram...
For the Oculus Rift I might upgrade to dual 970 SLI.
That's more or less what I get on my GTX 780.
It's possible the game still needs more optimizations. Especially in stations.