What is recommended memory usage for Cloud backups?

Getting the following warning on a couple servers. Was curious to know what is considered the recommended memory usage? This is a SQL Server backup going to AWS S3.

The LiteSpeed Verify Restore for 'model' raised a warning at Wednesday, October 21, 2020 11:30:08 AM with the message '(CloudParallelUpload x CloudPartSize) exceeds recommended memory usage.'