How to change the win7 mirror toolbar speed faster?

            Let's use the win7 image in a few people? So, do you find a phenomenon? The speed of the computer is very fast when it is first used, but as the usage time is getting longer, many services and programs in the win7 image And the tools have become much slower. Some people say it is caused by junk files in the computer. But after optimizing the computer, even after reinstalling the computer, we are very frustrated to find that it seems that the speed of the win7 image is not improved. Help, then what can be done in order to be useful? Below, Xiaobian takes the speed of the toolbar switching in the win7 image as an example, for everyone to introduce it in detail!
1. First, let's press the win7 mirror on the keyboard at the same time. The win+r shortcut opens the running window of the computer, then enters regedit in the window and clicks Enter, which opens the registry editor window of the computer.
2. In the win7 image registry editor window, we click to expand HKEY_CURRENT_USER \\ Software \\ Microsoft \\ Windows \\ CurrentVersion \\ Explorer \\ Advanced in the left menu, then find a blank right click in the right window , select the new DWORD 32-bit value and name it ThumbnailLivePreviewHoverTime.
3. After that, double-click to open ThumbnailLivePreviewHoverTime, in the edit window, the default value of the numeric data is changed to 200, which means 2 seconds. You can also set it according to your needs. After setting, let us confirm. Save, then restart the win7 mirror computer settings will take effect.