25 Gbit/s HTTP and HTTPS download speeds

I wonder what is causing the bottleneck in the TLS case, particularly with kTLS where the CPU is only at 2% but the throughput remained the same. Perhaps there is a limited size stream buffer somewhere in the crypto side that doesn't allow high throughputs whereas the raw networking buffers are more dynamic? I know the Caddy guys read HN so maybe they can chime in with some actual knowledge :).

But it doesn’t say what TLS cipher suite it is using, making it a pointless benchmarks

The leading "25" got stripped from the title, unfortunately.