How does the win10 system display photo thumbnails?

1, just like this when upgrading, has been named relatively convenient, but if the same picture is more, it is also very inconvenient.

2. Under normal circumstances, in “View”--->“Options --->“Change Folder and Search Options”--->“ View ”--->“Advanced Settings>--->Show “Always show icons, never show thumbnails”


3, but after this set, found or icon, no thumbnail. As shown below, then where is the problem?

4, the key is still in the "View" option, only select "large icon", "large icon", “ in the icon & rdquo ; (any of the three) to display the thumbnail, as shown below.