[Guide] Resolve Realtek NIC Stability Issues on FreeBSD - FreeNAS/TrueNAS, pfSense (2.4.4, 2.4.5, 2.5.0) + OPNSense, use 2.5Gb Realtek

Do you know/ or can compile this driver ‘RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller’ I seem to have the slow performance on opnsense ver 20.7.4. Reading the comments i see that it mentions RTL812xx, but nothing specific on 8111.