Yes, sorry, there was some serious lagg in fetching posts from Lemmy World that persisted for several days and accumulated a 1-week delay.
But after upgrading Mander it is now fetching data from LW quite rapidly and it should be back in-sync in about a day and a half from now.
If you are curious about the ranking algorithm, there is some info here: https://join-lemmy.org/docs/contributors/07-ranking-algo.html