I have a Kona LHi installed in slot 2 of my Mac Pro. When working in a 30p sequence in latest version of Premiere Pro CC, the playback going out to the external monitor falls behind in sync from the canvas window. I'm currently using a computer monitor as my studio monitor via HDMI, so I have the Kona set to scale my 720/30p sequence up to 1080/60p. It becomes very obviously behind in sync especially when ratcheting at 2x or higher speed. I don't have this problem when outputting through my Blackmagic 3D card using the same setup. I also don't have this issue when using the Kona in FCP7. I'm running Mavericks with the latest 10.4.8 drivers plus the 10.4.8 Adobe CC apps Kona software installed. Firmware is 5/21/12.