Seems your BIOS was never updated, see https://www.gigabyte.com/Motherboard/GA-890GPA-UD3H-rev-20/support#support-dl-bios. Versions FD and FE include some LAN fixes. Best update to latest version FF and re-test.
Seems your BIOS was never updated, see https:/ /www.gigabyte. com/Motherboard /GA-890GPA- UD3H-rev- 20/support# support- dl-bios. Versions FD and FE include some LAN fixes. Best update to latest version FF and re-test.