I just upgraded from an older Plugable display adapter to the 4KDP. I have an HP w2338h screen connected via the Plugable Active DP to HDMI adapter then HDMI to the screen. I bought the DP version plus the adapter as I think more screens will have DP in the future than HDMI.
I am using this in an office environment with an HP ZBook attached to a USB 3.0 port (blue inside) on the dock. The drivers installed are from February of 2015.
The entire screen flickers when I have certain applications on the screen. Other times, if I have an application which does not cause a full screen flicker, I will see a single line flicker every 4 seconds or so.
Help would be greatly appreciated!