Hi, I have my PC connected with its gigabit port (ASUS P8Z68 V PRO - GEN3) to my RE200 V2.0 with a CAT5e cable (and tried more than 4 other CAT5e cables, to discard damage) and have it's negotiated speed capped at 100Mbps in device manager  as shown:

 I get more than 150Mbps with my phone, tablet and such in the same spot as my RE200, so i discard  interference or something like that.

 I checked that the host network to the Ethernet port is indeed the 5Ghz WiFi: 

  I don't really know what to do, I tried everything I came up with and didn't work.

  I hope you can help me, thank you.