Run "journalctl -b 0 --no-pager | paste" to share the systemd journal .. the Kodi log won't show anything about the OS or the time period before Kodi starts which is where any delays/issues are.
I have an intel I5 Mac Mini with SSD. Been running OpenELEC for years but finally switched to LibreELEC. Did clean install with latest version. On boot up I get grey green for at least a minute before it finally loads Kodi. Many times it doesn't seem to load at all. I have attached the kodi log file. Can someone please help me out?