Loading movies from external hard drives

Hi all – just got a new TV. When I connect my external hard drives to the tv and Kodi recognizes them, they USED to show all files immediately. Now, it takes a little time for all the files to load. If I open the movies folder immediately, it won’t show all the files. I have to click out of the folder and wait a few minutes for everything to load. Anyone know why this is happening? Thanks.