I have the latest rolling release of VyOS running as both an SSTP and L2TP VPN endpoint. On the other side of the VPN I have a fileserver. When connected via L2TP, I can get 6-8MB/sec download speeds on file transfer, with SSTP its like 1-1.5MB/sec.
Everything else is the same, ISP/internet etc, network layout.
Is this to be expected?
I love SSTP + certbot, its an amazing VPN stack, given its so much more reliable than L2TP (and forever free certs), but this is a huge performance difference