Additional Network Ports for Multiplayer Gaming: Lag spikes on wifi

Additional Network Ports for Multiplayer Gaming: Lag spikes on wifi
I have xfinity Isp using the standard xfinity modem/router combo and have been having issues with random spurratic lag spikes in all the games I play. I have had my Isp open all necessary ports to the xbox it help a little the lag spikes got fewer and farther
between. But none the less still extremely annoying and getting me scored on in rocket league a lot. I also had them do dmz host as well. I am stuck and don't know what else to try. I wish i could be hardwired but at the moment not possible. If anyone knows
of anything that could possibly help that would be greatly appreciated thanks.

:)

 

Additional Network Ports for Multiplayer Gaming:

Additional Network Ports for Multiplayer Gaming:
my Xbox is not connecting to Xbox live nor the WiFi and my WiFi is good and my Xbox live is good to

 

Additional Network Ports for Multiplayer Gaming: NEVER EXPERIENCE LAG AGAIN!!!

Additional Network Ports for Multiplayer Gaming: NEVER EXPERIENCE LAG AGAIN!!!
For those wondering, all the user did is switch to OpenDNS.