I know this is a LibreELEC forum but for someone who plays large file.
I have Infuse on the Apple TV 4K and that works very well with a really nice interface. It plays all my movies & TV programs from my NAS box including 4K movies up to 70gb in size with no probs
It is more wife friendly compared to Kodi devices ( i also have a Wetek Play 2 with LibreELEC )