Judder on high framerate cameras

Problem: Slight judder/jitter/stepping when panning cameras

Pipeline: A pair of 60fps color machine vision cameras feeding live video simultaneously over USB 3.0 to 64-bit OF application. Textures straight from the cameras are broadcast via a Syphon server. A Syphon client in a separate OF app (32-bit) receives, then draws the videos to an Oculus Rift.

System: Mac OSX 10.10; iMac (Mid 2011), Mac Pro (Late 2013)

Steps taken: Oculus Rifts are notorious for judder, particularly on OSX, so we’ve done some major experimentation and had a good deal of success in reducing it. The problem seems to still persist when no Rift is present and the window is running on the main display, however, regardless of if video is running through the Oculus SDK.

Plea: Any ideas? The judder is slight, but noticeable, and really detracts from the VR experience.