Someone mention that 417.58 applying ICC profile on full screen games. https://www.reddit.com/r/nvidia/comments/aavgbw/41758_hotfix_driver_now_automatically_applies_icc/ For me only Sims 4 and Unigine Valley work. But Sims 3 (fullscreen) , Company of Heroes 2 (there is only fullscreen to choose) , Watch Dogs 2 (no matter in windowed mode or borderless windowed or full screen) still ignoring ICC profile. I use DisplayCal as ICC profile loader. Try CPK as well but no luck. Also try Color Clutch but logs file told me that there is no gamma called. Also it only work with 32 bit games so I can't try with Watch Dogs 2. Program is also dead since developer abandoned it since 2012. Try PowerStrip also but I cannot tick write directly to palette DAC. Entech said NVidia does not approve of this method, and starting with the Geforce8 no longer shares hardware register data with EnTech. Anything I am missing ?