The thumbnail and view options in the My Images & Videos panel are highly customizable. For example, if you want to re-order files between multiple pages, it makes sense to show more image thumbnails per page to allow for easier sorting.
Navigate to one of your galleries, and click on the Search Panel to reveal the thumbnail view options.
Changing the thumbnail options in the My Images & Videos panel will not affect your front end galleries - these options are purely for your own file management purposes.
The view options will also allow you to impose star ratings and image titles on your file thumbnails. Once you’ve made a change, the new settings will apply to all galleries and collections viewed in the backend.