A few weeks ago Valve developers announced a new technology called Motion Smoothing that would enable low-end GPUs to support VR games without problems. The system “looks at the last two delivered frames, estimates motion and animation, and extrapolates a new frame. Synthesizing new frames keeps the current application at full framerate, advances motion forward, and avoids judder”.
Motion Smoothing has been available in Beta for some time, but the test phase has come to an end and it seems the technology is ready to enter the final, stable stage. You’ll still need an HTC VIVE or HTC VIVE Pro headset -Oculus Rift and Windows Mixed Reality headset have their own display drivers with other tricks to sustain frame rates-, and the lack of AMD GPU support is somewhat disappointing, but hopefully Valve will fix this in future iterations of this technology.