RT-AC68U, really slow Wired speed on my Xbox One X (faster than Wi-Fi)

Hey guys. I've tried everything here and I can't seem to work out why my Wired speeds on my Xbox One X are slower than my Wireless speeds.

Router: RT-AC68U 384.4_2 Firmware (Factory reset after update)
My ISP speed: 100mbps Down / 30mbps Up
Xbox One X - NAT OPEN - No service problems

Xbox One X (Detailed Network Statistics result):
[WIRED] 90Mbps Down / 10.1Mbps Up - 0% Packet Loss - 1480 MTU - 47ms Ping - Cat6 Cable
[WIRELESS] 75Mbps Down/10.0Mbps Up - 0% Packet Loss - 1480 MTU - 51ms...

RT-AC68U, really slow Wired speed on my Xbox One X (faster than Wi-Fi)