In my standard 10G lab I’m testing with average server hardware from Fujitsu, Xeon processor, plenty of RAM, standard 10G cards (X520, X710).
Doing my ususal measurements without any kind of tweaking I got these results (iperf, 10 streams and single stream):
IPSEC (AES-GCM): 2.6 Gbit
WireGuard: 1.9 Gbit
OpenVPN: 1.1 Gbit
Tinc: 700 Mbit