this post was submitted on 22 Jul 2023
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No experience with Tailscale, but can confirm that performance-wise, WireGuard is a huge improvement over any other mainstream VPN protocol. It's also pretty robust and generally easier to use.
When configured and tuned properly, I've seen WireGuard able to move data at a little bit better than 90% of the provisioned bandwidth of the line. This in of itself is amazing and an order of magnitude better than OpenVPN or even IPSEC considering the overhead that encryption introduces into the packet size. Also, if you consider extra data processing going on, i.e. packets are being encapsulated, encrypted, transmitted, decrypted, and de-encapsulated, this is even more amazing.