Resolution:
The FTP activity needs to do a DNS lookup for the host name or IP address. Sometimes this lookup operation can cause delay. To avoid this, add your FTP host name/IP address into the etc/hosts file. For example, the value used in the “FTP Connection” activity is “192.168.65.187”. Then in the hosts file, add the line "192.168.65.187 192.168.65.187". On a Windows machine, the hosts file is in the “%SystemRoot%\system32\drivers\etc\” folder.