Very low TCP transfer speed on IPIP+IPsec on CCR1009 and CCR1036

[chechito]

this test confirm the issue

http://forum.mikrotik.com/t/10-gig-over-eoip-tunnel-it-is-possible/92210/1

1.7 Gig IPSEC encrypted (1500 MTU) - Minimum of 25 to get max throughput.

something like 68mbps per tcp connection

maybe using smb3.0 can improve the situation using multiple connections per transfer

https://blogs.technet.microsoft.com/josebda/2012/06/28/the-basics-of-smb-multichannel-a-feature-of-windows-server-2012-and-smb-3-0/