Itunes re-matches (syncs) entire library every time I open iTunes

I get a complete resync everytime which takes hours and slows my entire Mac. Having read a few suggestions I have:
Checked if songs are "waiting" to sync or have an error. All seems fine. All mathed, uploaded or duplicates.
Rebuilt the itunes library. By essentialy reimporting everything as a play list (as instructed in a support article)
It keeps doing it and it makes it unuseable.
Any ideas?

Hi,
Files that contain the .itl file extension are database files that are used by the iTunes media software application. These files are used by the iTunes software to organize the music files in a user's iTunes music library. The ITL file contains a log of the songs in the user's iTunes library as well as the user's playlists, any comments the user may have created for a particular track and the user's song ratings.
While the ITL file does reference the song's on a user's hard drive, it does not contain any actual media data in and of itself.
There for match needs to scan the individual files.
Uploaded tracks do not use up storage space Specifically for IOS devices!! You can access/ stream from non IOS devices i.e. computers
Icloud Status column shows tracks have been "matched", "purchased", "uploaded", "duplicate", "Error", "Waiting", "Removed" or "inelligible". It does not have a cloud with a line through it. Symbols are used in the icloud download column.
Turning off match is not a solution unless you no longer want to use match. First step is to see if problem can be solved.
Yes match can help for a hard drive failure but this does not remove the need to have adequate backups.
Jim

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Hi,
Files that contain the .itl file extension are database files that are used by the iTunes media software application. These files are used by the iTunes software to organize the music files in a user's iTunes music library. The ITL file contains a log of the songs in the user's iTunes library as well as the user's playlists, any comments the user may have created for a particular track and the user's song ratings.
While the ITL file does reference the song's on a user's hard drive, it does not contain any actual media data in and of itself.
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Turning off match is not a solution unless you no longer want to use match. First step is to see if problem can be solved.
Yes match can help for a hard drive failure but this does not remove the need to have adequate backups.
Jim

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Arian Antonucci wrote:
I am having this issue every time I open itunes. There are about 4000 items that sync every time I open itunes. They are the same songs and podcasts. Why won't these items just stay on the ATV?
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Itunes re-matches (syncs) entire library every time I open iTunes

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