If I click on a BluRay structure it plays on MacOS, but if I click on the same structure on AppleTV it shows the BDMV & Certificate folders. Anyone else getting this?
Are you using the same connection type (EG SMB, WebDAV, UPnP, etc…) on both devices?
Some connection types (such as UPnP, DLNA, Emby, Jellyfin, and Plex) won’t support folder-based videos such as BDMV or VIDEO_TS - so you may see folder structures instead of playable items.
Also, you may want to check to ensure ‘Smart Folders’ is enabled for the saved share on Apple TV.