Win7 is a slow-moving BUG

. This turned out to be a problem caused by the built-in Calibrate Color feature in Windows 7. Using this corrected color function will generate an ICC profile, which will be used by Windows 7 as the default. Once the ICC profile is defined with the corrected color, the speed will become like crawling when using the Windows Photo Viewer. Slow, just delete this ICC configuration file will return to normal.
If you encounter this problem and need to use the correction color, you can use the control component that comes with the graphics card itself to correct the color, do not use the built-in Calibrate Color in Windows 7.
If you have never used the built-in Calibrate Color for Windows 7, you won't be able to produce this ICC profile, and you won't have this problem.
Delete this ICC configuration file in the bottom position
WindowsSystem32spooldriverscolorCalibratedDisplayProfile-0.icc