Port fowarding

Ive been lagging games out for the past couple games and its really frustrating cause i wanna play and i cant. my internet speeds are great. would port fowarding work? if so how would i go about doing that

Port forwarding would not work, as the port is chosen randomly from a wide range. You can try to disable IPv6 to see if it helps. At the moment there are some issues with using IPv6 and we haven't yet discovered why.

If your router supports it enable UPnP & NAT-PMP
Also look at

Never Fear, A Geek is Here!

How do i disable IPv6?