I think the metadata matching algorithm needs abit of improvement when it comes to closely matching titles eg Narcos, Narcos: Mexico, The Inbetweeners, The Inbetweeners (US), The Office, The Office (US), etc you get the point
These shows are always mixed up for me even tho my episodes are named exactly as TVDB
The Office (US)\Season 1\ The Office (US) - S01E01 - Pilot
The Office\Season 1\The Office - S01E01 - Downsize
2 different shows named properly but they always end up mixed together. And even when I try to manually find the metadata some episode will still end up mixed up together even tho they are named to standard.
The inbetweeners\Season 1\The Inbetweeners - S01E01 - First Day
The Inbetweeners (US)\Season 1\The Inbetweeners (US) - S01E01 - First Day