Can anyone please offer any advice?

I've got a 30Mb (thirty megabit!) broadband connection, everything is *extremely* fast....except MW3!

I cannot ever connect to a host with less than ~150 ping. Every single time a play I can only connect to terrible hosts, which is RUINING the game.

My NAT type is open. I'm playing on a PC.

Please can someone tell me how I can connect to good hosts.

I've been playing COD since the first version about a decade ago. I've had lots of different ISPs and broadband speeds in that time, but never has the gameplay been this terrible.