When using RA.FTP against a Titan FTP server (https://titanftp.com/) the transfer can be slow.
This issue was only found with SFTP GET, but it is not excluded that this happens as well with PUT.
This is a known problem between the Titan FTP solution and the JSCH library used by RA.FTP see http://www.jcraft.com/jsch/ChangeLog
The correction in JSCH v0.1.53 is not added to the internal version of a class in RA.FTP
Update to a fix version listed below or a newer version if available.
Fix version: RA.FTP 4.0.6
Component(s): RA.FTP - Available