[docs] Mention UNC path workaround to create network drive

docs/docs/photos/troubleshooting/nas.md

@@ -14,9 +14,21 @@ directly stream chunks of Google Takeout zips that are stored on network drives.
 
 In particular, the folder watch functionality suffers a lot since the app needs
 access to file system events to detect changes to the users files so that they
-can be uploaded whenever there are changes.
+can be uploaded whenever there are changes. Network drives are less reliable in
+providing these file change events correctly.
 
 Since are high chances of the user having a subpar experience, we request
 customers to avoid using the desktop app directly with network attached storage
 and instead temporarily copy the files to their local storage for uploads, and
 avoid watching folders that live on a network drive.
+
+## Exporting to UNC paths
+
+Generally, exports are likely to work better than imports, since the interaction
+with the file system is relatively simpler (Note that the app still needs to
+scan the folder to find existing files, esp. if the continuous export option is
+enabled).
+
+A special case is when exporting to a UNC path. In this case, the file
+separators will not work as expected and the export will not start. As a
+workaround, you can map your UNC path to a network drive and use that instead.