Love this monitor so far, even if I can only get a signal via HDMI (60Hz) direct from my HP Zbook. Does anyone know why I can't seem to get one via DisplayPort (144 Hz) from the Zbook (Thunderbolt) dock that has 2 full DP ports? Scratching my head as I get output from both DP ports via the same Thunderbolt dock at work (albeit to 2 Dell 60 Hz monitors)...