Frame rate set to unlimited, yet seemingly always half of maximum


For some reason, my FPS on my 60HZ monitor seems locked at 30, and when in my DK2 Rift, 36/7 (which incidentally is around half of 75).

Is there any particular reason for my frame rate to be halved?
It’s not as if my computer is old, it has a GTX 770.


have u set developer render frame rate?
also if u set it unlimited and turn of vsynk u can get silly fps


Yeah, though I have Vsync on in Nvidia Driver settings, as it is a prerequisite for using VR.