Rclone sync stuck or too slow on 5 million files

welcome to the forum,

that has been discussed a number of times in the forum.

https://forum.rclone.org/t/recommendations-for-using-rclone-with-a-minio-10m-files/14472/3

https://forum.rclone.org/t/how-to-sync-s3-with-millions-of-files-at-root/36703/4