File calculating for background transfer

Hello.

File calculating for background transfer - most important minus of winscp.

For what this calculating ?
100000 files
Winscp - calcualting 30 minutes, transfer 10 minutes.
Filezilla and all others - transfer 10 minutes.

Simple transfer and all. Why not ?
This is very simple for code i think. 1 day work.

No one FTP clients dont have this . Always i must use filezilla for copy big data.

But i like winscp.

Please post verbose log file both from WinSCP and FileZilla showing the problem.