Totally by chance, I found I had a duplicate actor Charles "Charlie" Chaplin in my movies, one going under Charlie Chaplin, the other as Charles Chaplin.
Anyone of you with a few of his movies should experience a similar issue
While this is not Emby's fault, but themoviedb's, I am left wondering how many of those type of error I have in my library.
An Actor Cleaner plugin would be extremely useful in my scenario.