My company installed a new edit suite, and there seems to be an issue with playback. It's a Mac Pro Rack with a BlackMagic DeckLink 8K Pro card installed. I'm working in Premiere with 4K footage (3840 x 2160 Frame Rate: 23.976) and playing out SDI in/out to SDI in on a Canon DP-V3120 31 reference monitor. The problem is during playback, the video isn't playing on monitor. I saw some issues with this card not working well with Premiere while going through some forums, and according to Blackmagic tech I spent 20 minutes on the phone with this morning, there are no issues with this set up. I've changed sequence settings, tried different footage etc. without success. Any suggestions are greatly appreciated!