EAC causes troubles with my internet connection

[roi]

Just a rant because I can't think of a way to fix the problem. (I tried disabling Green Mode on ethernet adapter options, etc).

I have my PC plugged through an Ethernet cable but I also have a PCI card for wireless connection.
When I started playing Elden Ring I noticed sometimes my internet would go off and I didn't understand what was going on. I still had Wi-Fi on my smartphone but my Internet PC was dead? I didn't understand. On top of that I also had the common disconnects even though my internet was fine.
Then I started playing offline only to see if the error persisted, and it did. I thought, maybe the PC is drawing too much power from the PSU or something and that makes the ethernet adapter to go down? But I play other games where I have 100% GPU/CPU utilization (ER has like 80 GPU and 40 CPU) and that doesn't happen. I tried to use wi-fi on my PC and no problem but the ethernet adapter would still go down every 10 or 15 minutes and go back some seconds later.

So I tried to disable Easy Anti Cheat and the problem was gone. I played windowed mode to see it would go down, nothing. Watching youtube videos in the background, working all the time.
On top of the that, game performance is a lot better.

What a POS software.