defrag your HDD turn off anti-virus / trash that eats ram etc while BO'n, sounds like a resource issue.. my load times are the same no matter the mod, not sure why only urs is really bad...
I had the exact same problem it happened continuously as i opened the game with the mod it kept saying 'conn interupted', it did this a few times and as i alt-tab it gets me out of game and gives me another error message. I restart my pc and re run blops and seems to work fine. =\ not sure how u can't do it.
Chao, if your connecting from Indochina to CG servers theres nothing that can be done about your 300 ping... The distance between you and the servers is to great... Either move to Australia to get optimal ping or live with it