If you want to speed up browsing around in explorer, you might think about disabling thumbnail previews in folders.  

如果要加快在资源管理器中的浏览速度，可以考虑禁用文件夹中的缩略图预览。

Note that this works in Windows 7 or Vista

请注意，这适用于Windows 7或Vista

To make this change, click the Organize button on any folder, and choose Folder and Search Options from the menu.

要进行此更改，请单击任何文件夹上的整理按钮，然后从菜单中选择文件夹和搜索选项。

Click the View tab, and then check the Always show icons, never thumbnails checkbox.

单击查看选项卡，然后选中始终显示图标，永不显示缩略图复选框。

Click OK, and you’re done.

单击确定，完成。

翻译自: https://www.howtogeek.com/howto/windows-vista/disable-thumbnail-previews-in-windows-vista-explorer/