Metadata varies from one scan to another

I have a couple of French movies in my library.

Le Dernier Combat (1983).mp4
Tagged as “The Last Battle”

Le Grand Bleu (1988).mp4
Tagged as “The Big Blue”

These sometimes get the wrong metadata, and I have to edit them manually.
Other times, usually with The Big Blue, it get the correct metadata.

Can the metadata chooser not use the year to pick more accurately?

I’m using DLNA.