Ramesh,
What you probably ran into, is just the building of the first time total structure. For me this takes an hour just the same. After this has been built, it is memorized (stored on disk). But also : newly added albums will only appear in that total list when it is rebuilt. This is a matter of asking for it via Search with no search arguments, tell it not to get from Tidal and some more; you will see it happening when the question appears : "Do you really want to ..." (and then mentioning the number of entries). This is to be answered by No, unless you'd explicitly want to rebuild it (and lose the PC for an hour or so).
Anyway, that was it ...
Regards,
Peter