In the photo library click on a folder heading, select manage at the top then select manage library. If you don't see 'unresponsive' then search and indexing is on. What you need to do is include the drive to search and indexing. In the start page search box type indexing options and click on settings, then indexing options. In the pane that opens select the modify tab, in this new pane check you can see the drive you need to be indexed. If not click the 'show all locations' tab. Now tick the box for that drive, select ok then close the pane. If the photo tile was open, close then reopen again. Any photo folder from that drive that's in your photo library should now be loaded in the photo tile. Same with the other libraries.
OnePlus 5 review