Pinnacle recommends scanning to the "temp folder" located at c:\users\yourusername\temp for speed and efficiency.
In order to change the default save location in ScanSnap, please follow these steps:
1. Open the "tray" on your pc (pictured below) and right-click on the ScanSnap icon

2. Select "ScanSnap Folder Settings" (#1)

3. Select "Save" and then "Browse"

4. Navigate to C:\users\yourusername\temp and hit "OK"

It should look like this (with your username where the obfuscated text sits):

5. Close out of the ScanSnap Window
6. Reopen the "tray" and right-click on the ScanSnap icon again
7. This time, select "Scan Button Settings" #2

8. Click "Detail" to expand the page
9. Go through and repeat Step 4 on the "Customize" tab and then click "Apply."
This will route all scans to the temp folder.
For more information on the "temp folder," please reference: https://pintechfw.freshdesk.com/a/solutions/articles/4000145970