So this has been interesting to me as I'm travelling at the moment and wireguard has been blocked on the guest wifi I've been on across the hotels, I've had to rely on cellular instead.

I've just tried Teleport on my Unifi router and that works. I believe it uses wireguard, and it is taking up to 20secs to connect, but I'm now curious as to what it's doing to bypass the VPN restrictions that are blocking plain wireguard.