2nd Monitor Banding
When I connect my 2nd monitor to my iMac (27 inch, Mid 2011) to my K272HUL monitor I have a distracting banding going on. I am using the DisplayPort and cable to connect. I have set the resolution to 2650x1440 for the 2nd monitor.
As an experiment, I connected the same monitor to my MBP retina and the monitor looked beautiful. So I know the monitor and cable work.
I have tried several work arounds to get the monitor to look nice but none of them work.
iMac, OS X El Capitan (10.11.1), Mid 2011, AMD Radeon HD 6970M 2048
