Still getting lag and I don't understand why.

NAT Type is Open. The router is next to my dads PC in the other room, my xbox is behind the wall and moving it isn't an option, no where else I can put it. It's actually more like 3-3 1/2 ft away from it with a wall in the way.

I just had my dad shut off his connection, and i disabled the other wifi signals for the 2.4GHz frequency and unplugged my broadband from my computer so the only thing with internet was my Xbox One and i was STILL getting lag spikes. Not as bad as when others are on but still I should get no lag ever....

And i did the xbox live troubleshooting on their website. It's laughable. Plus in my third post i stated that i used the speedtest.net, I have beyond that of qualifications for good connection. I don't lag on call of duty or any other game that i play, just always always lagged on NBA2k's even on the 360 when i had nba2k14 i always lagged. Seems to have to do with 2 player connections idk if i knew i would have fixed it by now -_-