# Batch editing performance issues on NAS

**URL:** https://community.mp3tag.de/t/batch-editing-performance-issues-on-nas/56873
**Category:** Support
**Created:** [March 30, 2022, 5:26pm UTC](https://community.mp3tag.de/t/batch-editing-performance-issues-on-nas/56873 "2022-03-30T17:26:20Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [March 30, 2022, 5:38pm UTC](https://community.mp3tag.de/t/batch-editing-performance-issues-on-nas/56873/2 "2022-03-30T17:38:46Z")

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Slow access because ...

- network connections are the almost the slowest way to access a lot of files,

- other processes like indexers, players, anti-virus programs could block the files for some time,

- padding is not big enough so the files have to be rewritten,

- Windows Defender slows down the access, see e.g.  
[Windows Defender - Speed of loading files in MP3Tag](https://community.mp3tag.de/t/windows-defender-speed-of-loading-files-in-mp3tag/47784)

- File sizes vary (e.g. is bigger for some files than for others) and together with insufficient padding lead to re-writing the big files - which takes longer.  
These would be the knobs I would twiddle and tweak.

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_[View the full topic](https://community.mp3tag.de/t/batch-editing-performance-issues-on-nas/56873)._