Enabling "Calibration with Windows 7 Display" will slow down the system

If you are an old Windows 7 user, from M1 to Beta, then from RC to RTM, you are constantly trying it out, you may find that some users' system speed will be slow after using the xp photo viewer. Especially when you use Windows Photo Viewer to view files in some image format, the system call process will obviously be somewhat "slow".
The reason why the above operation caused the Windows 7 system to be slowed down is to enable “Use Windows 7 Display Calibration”.






Why use "Windows 7 monitor calibration" will slow down the system?
Using Windows 7's own color correction function will generate an ICC profile in the system, after which, when the user browses the picture When the file is used, Windows 7 does not call the component that comes with the graphics card by default. Instead, it calls the generated ICC configuration file.
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If the user has not used the color correction function, the ICC profile will not appear, and the above problem will not occur.
In this regard, the solution given by the forum users is to delete the "CalibratedDisplayProfile-0.icc" file under "X:WindowsSystem32spooldriverscolor". However, this method can only solve the problem temporarily and cannot be solved once and for all. Because once someone uses the color correction feature that comes with the Windows 7 system on your computer again, the file will be generated again. The author believes that a better method should be like this:
Go to the control panel, find and open “ color management & rdquo;. In the "Color Management" dialog that opens, switch to the "Advanced" tab and click on "Change system defaults" in the lower left corner.

Changing the system defaults
After that, a dialog will pop up again <Color Management - System Defaults”. In this dialog box, also switch to the "Advanced" option, and then cancel the system default checkmark "Use monitor calibration".

Cancel the system default checkmark "Use Windows monitor calibration"
After the modification is completed, save the settings to exit.
Please note that in the case of the official release of Windows 7, at present, only some of the graphics cards will conflict with the system default settings, that is, the above methods are not applicable to every Windows 7 user. If you find that the picture is abnormal after disabling the color correction enabled by default in the system, please re-enable it and manually correct it once.