Had a similar issue on my x670e ProArt. This helped me.
https://rog-forum.asus.com/t5/downloads-for-motherboards/drivers-marvell-aquantia-ethernet/td-p/869789
Also verify in Device Manager > Marvell AQtion Network Adapter Properties > under Power Man...
Do you have PCIe power supplied to the port just beside the MB 24-pin power?
Does your BIOS have a setting to enable/disable Quick Charge? I couldn't find it, but I've noticed that when I boot into Windows I get the notification pop-up that Quick Cha...