Openvpn, forward packets very slowly

linux ip iptables routing openvpn

Solution 1:

I am not sure if it is same cause but I think it worth to adjust about tun-mtu and mssfix as mentioned in openvpn-on-android-tcp-retransmissions-after-openvpn-server-reboot

EDIT: I found this one might be helpful too [RESOLVED] Inacceptable openVPN performance Changing a kernel parameter: net.inet.ip.fastforwarding = 1 (add in /etc/sysctl.conf on the your linux server)

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