Comment by pa7ch

Not ubiquiti's doing but this repo has pre-built kernel modules of wireguard and vyatta integration for I think most of the edgerouter series: https://github.com/WireGuard/wireguard-vyatta-ubnt

I haven't updated/tested in awhile but last I remember I was seeing 800+ mbit/s on my dinky mips ER-X. Pretty amazing and easy to use.