So I just downloaded Mw4 onto my Mac Air (Yes, I know Mac is not a gaming computer, but it has always worked fine for me) and I did so from the App store. Whenever I try to connect to a lobby, my screen just freezes and I cant do anything. Its supposed to download something, but its not working. When I used to play it on my other Mac, the download worked fine, and I got into the lobby afterwards. Like if I was to play gungame, I would connect to it, and it would download without any issues, but now its just freezing. Something I could do to fix this issue?