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MC 24 for mac: very very slow *SOLVED*

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JimH:
What happens if you start with a new library and import your files again?

blgentry:
You might also consider exporting your MC23 library as MPL.  File > Export Playlist .  Tell it do do everything (include all) and export all fields.  Then you can import that into MC24 (File > Import).

It's not the same as File > Library > Restore library .  There's some possibility that something in your MC23 library is confusing MC24 making it behave strangely.  This "import" process should get all of the metadata, but it will miss your settings, playlists, and custom fields (I think).

I'm not saying this is *the* solution to your problem.  It's just something else to try.  With a fresh library as Jim suggested.

Good luck to you.

Brian.

bodiebill:
I cannot pin-point the reason for this strange behaviour but by now I know that it has to do with the expressions (calculations) in my Library Views.

Here is an example of the type of a formula I used to generate the custom tag .Album based my file and folder naming convention:
If(IsEqual([.GenreHL],Classical),Regex(FileFolder(),/#(.+)_(.+)_(.*)#/,-1)[R1]_[R2]_[R3],If(Isempty(Regex(FileFolder(),/#(.+) - (.+)#/,-1)[R2]),FileFolder(),Regex(FileFolder(),/#(.+) - (.+)#/,-1)[R1]))

Due to the size of my library (almost 5TB), doing viewing and searching with such on-the-fly calculations appeared to be too much for the program and/or my system (iMac + NAS).

So I started from scratch as suggested, and minimised the on-the-fly calculations. The heavy workload is now when I populate the fields with values rather than when viewing and searching. The latter is now done based on fixed rather than calculated field values and everything is much faster now!

It is still a bit strange to me that MC23 was much faster with the same complex library than MC24, but I am happy now to work in MC24 in the new manner.

Thanks for your suggestions, which pointed me in the right direction!
 

Scobie:
Nice result Three Seven.

blgentry:
Bodiebill:  You should use those same expressions *once* by cutting and pasting them into the fields you want.  This will do the calculation, across all of the songs/albums you have selected, and populate those values statically.

That way you get the info you want, based on your rules, but MC won't have to recalculate them every time.

I'm glad you were able to make some progress on this.  :)

Brian.

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