Intel I211 Gigabit Network Connection Network link is disconnected [Event 27] Part 2

[rusTORK]

In which Intel not only didn't fix a problem, but also break solution. What have you done, Intel...

We have to find new solution (at least try).

Hello Intel!

Almost exactly 1 year ago i started topic:

Intel I211 Gigabit Network Connection Network link is disconnected. Event 27

Link: https://community.intel.com/t5/Ethernet-Products/Intel-I211-Gigabit-Network-Connection-Network-link-is/m-p/1475426

In which WE (I am and Intel - together!) find a  solution.

But in new driver i no longer able to use it because if i use it - download spead drop so hard, that i barely can open some sites. I literally thought something wrong with my ISP, but my phone open same site via same ISP (via Wi-Fi) with no problem! So, wired - problem, Wi-Fi - no problem.

Driver versions i tested (downloaded and installed previous version each time):

1. Intel Ethernet Adapter Complete Driver Pack v29.0.1 (driver v14.0.2.0);

2. Intel Ethernet Adapter Complete Driver Pack v29.0 (driver v14.0.2.0);

3. Intel Ethernet Adapter Complete Driver Pack v28.2.1 (driver v13.0.16.0) - only this work as before.

Default "Speed & Duplex" "Auto Negotiation" still generate Event #27, but if switch it to "100Mbps Full Duplex" i will not get Even #27 in each system boot, but download speed drop to 5 Mbps/2 Mbps/15Mbps on SpeedTest.net.

If i switch back to "Auto Negotiation" - problem with speed is gone - 94-95 Mbps.

For me it's clearly problem somewhere is a driver files, specifically in version 14.0.2.0.

Additional Hardware Information:

CPU: AMD Ryzen 7 5800X3D;

Cooler: Noctua NH-D15 chromax.black;

SSD: 1TB Samsung SSD 990 Pro (Installed in top M.2 slot);

SSD: 500GB Samsung SSD 980 Pro (Installed in bottom M.2. slot as System);

GPU: EVGA GeForce RTX 3080 Ti FTW3 Ultra Gaming (Installed in top PCIe X16 slot);

PSU: 850W Seasonic PRIME Ultra Titanium