Thx a lot.
Now it starts
And of course "Sync Playback to Display" still doesnt work.
They said its fixed in v19 (Sync Playback to Display doesn't do 23.976 to 24 at 60hz anymore (Leia RC)) but it still doesnt work.
24p on 50hz but still the 1x per second jerk.
SAD SAD SAD.
Coreelec 9.0.1 was the last version where it worked.