Actor images in Plex has always had a little conflict, where movies and tv shows would override each others actor images depending on which agent was refreshed the latest.
This post: Is there a way to change actor images? Third party tools?, talks about removing user-defined actor images, which I think would be a good idea, if Plex themselves provided the actor images as metadata for the agents, rather than having people upload images to TMDB and constantly changing them.
