BIOS is on 0705 and I've tried so many different drivers including the latest from Intel itself and the ones listed in this thread. I have not begun to OC yet. I even have memory timings set lower than their advertised timings/freq just to keep the system stable.
This issue happens 99.9% of the time I launch MSFS or try to file copy to Google Drive. PUBG kindof works but is super sluggish with the wired NIC. Going to the wireless NIC fixes all this. I found something weird for that other 0.1% of the time where I've updated the driver, re-enabled the NIC in Win11 then tested. It would work find that 0.1% of the time but on a reboot it would not work again.
I have moved the cable to multiple routers and directly to my FIOS router. I also brought in other Win11 systems and Linux systems in my house and plugged into the
exact same physical wire from the x670e. They all work fine. As I indicated above, using the same system and booting with a current Ubuntu Live USB stick instead of into Win11, I can do file transfers and perf testing fine using the same built-in Intel i225-v NIC. So I think its a driver problem. But who knows, I've noticed so many problems with the Intel i225-v in other forums (including here).
I have an AIB wired NIC coming in today to put in the avail PCIe slot. If that works and there is no other solution from ASUS, I will be looking to return this motherboard.
[UPDATE] I put in the AIB Realtek card and this NIC works fine. There is something wrong with my Intel i225-v on the Asus x6700E-E Gaming with either the physical port (which doesn't seem likely since running under Ubuntu it works fine) or the driver/firmware (which I have not found one working correctly yet.
