Sorry bud. Your eyes are not better then using a colorimeter for an ICC profile. Those Nvidia options are there for playing with the naked eye. Also another thing I see. People use an ICC profile then go play with the Nvidia options as well. Big no no you are just messing up the ICC profile. Always use one or the other. Not both.
Sure I post my ICC profile for everyone to be nice. But its not exactly accurate for folks. Each monitor is different even if its the same make/model. Light output and color shifting happens with all monitors. Hence calibration once a month I do. Some folks like to do it even sooner on a weekly basis. Maybe for color critical work.
Since this is a gaming monitor and I don't do color critical work. I stick to once a month personally.
Edited by FattysGoneWild - 4/21/17 at 12:02pm