Win7 replaced with a solid background will cause the boot speed to slow down how to solve

This can also be regarded as a BUG win7, as long as you directly change the background to a solid color, and then do not change any configuration. Then about your boot speed will be 30 minutes longer than the original, let's talk about the solution below!
1
Recommended method
Solid color yourself according to the size of your desktop to get a solid color image It doesn't matter if the size is different, just use the tile. Anyway, the solid color can't be seen.
2
If you don't want to get the picture yourself, you can only modify the registry.
Enter regedit into the search bar and make sure to enter the registry. Then locate: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionPoliciesSystem, find and change the value to 5"DelayedDesktopSwitchTimeout".
The above is about how to solve the slower boot speed when the win7 is replaced by a solid background. Basically, there are only two solutions. The second step is to restart before it can take effect. Of course, you need to check the restart speed, you need to restart itself, so you don't want to restart.