I wasn’t sure what I saw in the upper left corner. Does their UI even allow one to select more than one file?
Batching is just my name for not doing one-at-a-time restore-and-wait as your posted Duplicati script did.
If that’s like How to restore folders (or entire buckets) to Amazon S3 from Glacier?, then I guess you tried.
s3cmd restore --recursive s3://mybucketname/folder/