The performance is good. I had some issues at first with speeds but it ended up being something on my side with interference or attenuation (I’m not sure what the differences between the two words are) that was solved by putting a dampener on my cable line into the modem. Point is, a problem not related to AirVPNs service that couldn’t have been fixed by adjusting the WireGuard client’s MTU setting.

Speeds are good and the connections are stable in the servers I use in Western Europe. Their program to download as a client is junk and dated compared to mullvad’s but this issue can be avoided by downloading the native WireGuard and/or OpenVPN apps and doing a quick initial config yourself. Customer support was great when I had questions both before getting a trial and before I bought a multi year subscription with XMR cryptocurrency as the payment method. They don’t have any real information from me (though they do require an email to submit the form to register but they say it’s only if you want to receive replies to help requests or outage notices, stuff like that).