Attaching documents in QuickBooks desktop shouldn’t affect the performance of the software. They are saved on the computer hard drive in a separate folder, and they are not included in a back up of the QuickBooks company file either so that backup file does not grow either. All attaching does in QuickBooks, is to enter a pointer to the hard drive location for the attachment folder.
If you experience slowness with QuickBooks, there may be other reasons like due to a large company file or network issues.
Here’s an article that’ll guide you:
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