I have 2 Odroid C2, one on CoreElec and one on LibreElec, just for comparison and test purposes.
CoreElec is definitely better, mainly on the Video and Audio parts.
But I get a weird behavior with the scraper, whether TMDB or Universal.
They both miss some movies.
To be precise, some movies are not recognized at all, some wrongly.
- Dark.Phoenix.2019.1080p.mkv - not recognized
- The.Secret.Life.of.Pets.2.2019.1080p.mkv - wrongly recognized
The same addons on LibreElec recognize those movies just fine, which confirms my use of both, for now.
I can give as much more details as you want.
Thanks in advance, keep up with the good work !!