My connection is really good. I have 150 mps Extreme speed internet or some sheet from Comcast/
THis is while Im on my chrome book via WiFi and the HD cable box is running in the bedroom as well (Which also runs off the internet and Wifi)
30ft ethernet cable from Modem to Xbox
Download speed - 121mps
Upload speed 16.98 mps
Packet loss 0%
MTU - 1480 (Not sure what this stand for)
Latency 75 ms