Wed Jun 06, 2018 1:06 pm
To date none of the Mikrotik routers supports hardware encryption for OpenVPN, those which do have CPUs with hardware encryption can currently only use it for IPsec.
In addition to that, RouterOS only supports TCP transport for OpenVPN, so the network between the clients and the server must have enough capacity and quality not to drop packets. As soon as packets get dropped and retransmissions become necessary, the connections over any VPN using TCP transport become very bad. So if you prefer Mikrotik, use IPsec (and benefit from the hardware acceleration by choosing a model like hAP ac² or hEX S); if you prefer OpenVPN, don't use Mikrotik.