[DanCooper]

No, this do not save time when Kodi is adding the movies to library. Kodi use the local donwloaded actor thumbs, even there is an URL in NFO.
Link to local artwork in NFO make only sense if you want to use a common actor thumbs folder for ALL movies. But this is a pending idea/feature request and not actually implemented in Ember.

Thanks for the prompt reply.
maybe Milhouse can tell us if Kodi takes in the Thumbs from the .actors sub floder even though the NFO has URL for the image.
I am not familiar with Kodi's inner workings.

have you any idea when we might see a "common" folder for all Movie and TV actors implemented??
Mediacenter master has implemented this and it works very well.

No, i can't say a date. We have so many other importent things to fix and improve before.