There's no question the projector can do 144hz. The problem is that to display 60fps 3D (120fps) at 144hz the projector would need to repeat 24 out of the 120 frames, resulting in judder, and some input lag due to the timing differences. It's just smarter for the projector to operate at 120hz in that case. What would be interesting is if the PC could also operate at 144hz, giving the projector 72fps 3D, but most likely the limits of HDMI prevent it.
12/1/13 at 3:50pm