Netgear router lag problem

[uber soldat]

When playing COD 4 with a wireless netgear router every few minutes it will freeze and then everything will be in a different place as if major lag has taken place is there a fix for this?

 

[uber soldat]

It works fine with a 20m Ethernet cable
But that is sort of pointless as its supposed to be a wireless router

 

[uber soldat]

Anyone else got any ideas?