I got the latest RC for 8.1.1 and purchased an OpenVPN license. I’m having some problems. I realize that this is not released yet but someone might have some hints.
I’m trying it with Windscribe which has been working very well for me with WireGuard so I think it’s a reasonably good service.
I got it working and was delighted when I went to speedtest.net and saw pretty good performance through the VPN. But then when I browse to some sites such as CNN it just hangs and times out. That sounds like a MTU issue so I’ve been fiddling with the MTU and got it somewhat better and even managed to reverse which sites work and which don’t but never achieving consistent good performance.
The uplink is cellular on AT&T. Using that directly, I’ve found that MTU 1430 works well. I played around with ping to determine that by trial and error.
A couple of questions:
What should be the relationship, if any, be between MTU on OpenVPN and the uplink? If the uplink is 1430, what should OpenVPN be?
Windscribe gives me the following choices before generating a .ovpn file.
Protocol: TCP or UDP
Port: About 10 in a dropdown list.
Cipher: AES-CBC or AES-GCM
What would be good choices? I’ve mostly been playing with UDP, port 1194, AES-CBC.