Hi, im having problems connecting to call of duty 4 and communications.
I have NAT type 2 so conection and communications should be all good but they are not. it takes about 5 minutes for call of duty to connect me to a game and i can only connect and hear 1 of my friends not any of the others and wont let me into partys with them. it disconnects in games sometimes and takes quite long for it to load the game.
ive been trying to work out why this is happening for ages and cant find a answer. can you help me please?

thanks