Some time ago I purchased a pair of aquantia 10gbe networking cards. I installed 1 in my server and one in my desktop and ran a cat6 cable from my office to my network closet. Using iperf3, i only get about 5gb~. I pulled the card from my server and installed it into another pc I have sitting around and connected them with cat6 patch cable and got the full speed. This verified that the cards were indeed performing as expected. I then moved the second pc from my office to my network closet to ens