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I think tailscale uses a userland TUN/TAP interface[0] which negotiates at 10MiB/s; that’ll be the largest bottleneck and likely applies to Innernet too.

Tailscale does use considerable CPU on my Mac though.

[0]: https://github.com/tailscale/tailscale/blob/main/net/tstun/t...

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Latency and bandwidth was a big issue for us - innernet uses the WireGuard kernel module on Linux when available, which is about as good as you can get (easily achieving saturated gigabit line speeds).

macOS is a different story, since there are only userspace implementations at the moment. Innernet currently looks for the official "wireguard-go" implementation, but you can swap out userspace implementations as you like. I'll add an environment variable check to make that easier without needing to recompile.

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