Your speed is more likely to be limited by the network between UK and HK than the Synology itself. I have both DS216+II and Pi4 set up as VPN server and the connection from Europe got similar results of 200ms, 80Mbps, while HK guest can reach up to 6ms and saturated my 200M broadband. But I recommend a dedicated Pi4 as you can use Wireguard instead of OpenVPN, and it costs much less than a Synology |