Hahahaha I'm sorry but how exactly do you reboot your Nat? Do you also do this every time you have a file download slowly? Because that's exactly what your doing, the reason you'll lag is because of your connection strength to the host might be poor, it will not infect your equipment that's completely impossible, if you think it is go play a game of cod with the search preference on global then back to local and tell me your equipment is infected and you won't have green bars in a local match.