FTP Connection Speed Tuning

Initially FTP connections might be extremely slow.

Create a proftpd.include2 with the following details:
IdentLookups off
UseReverseDNS off
Quotas on
AllowStoreRestart on
AllowRetrieveRestart on
TimeoutIdle 1800

Enter the following line in the proftpd.conf
Include /etc/proftpd.include2

Restart the FTP.

Note: I had done this fix on VPS Plesk