Coop issues?

[cheeriokilla]

So I bought the game and decided to try it out, it won't recognize my LAN so I decided to create an online game even though we're next to each other. It all started fine but suddenly it's like a MAJOR FAIL OF PACKET DELIVERY and it starts lagging with seconds of lag, we're not talking about minor lag or anything and it's funny cuz I can see my mates computer and he see's things I don't and things look all choppy there... Both computers are more than capable of running the game. Hope this gets fix'd

EDIT: On another note the whole 4pack thing is really misleading, it was REALLY cheap but it makes no sense if not 4 or more players can play together... The whole idea was developed by Valve with Left 4 Dead because they were 4 survivors. I was really hoping that there would be 4 player coop. Why not do a 2 pack and if you want to give a discount give a 50% discount on the second copy and it's almost the same deal as a 4pack just half the amount of games and half the discount...

I enjoyed the game a lot and I would enjoy it even more if there was NO LAG when playing LAN.