--no-traverse am i understand it wrong?

I have milions of files on amazon
variable sizes, from 1B to 10GB,
i do copy from acd to gdrive
rclone (–transfers=16) (–checkers=16) --no-traverse acd:folder gd:folder
i tested with and without those transfers.

And when i lost conection after 2 days, started again, but before copying rclone checks files, and it takes very long times before it will even start to copy again.
I tested with --size-only, --ignore-existing etc.
I have to wait for about 30 minutes before it starts to copy again…
rclone latest beta.

How many files in acd:folder? If there are lots, then don’t use --no-traverse it will only slow things down.