Could we get back to the topic of "co-op" again now please? Would be awesome as this would be an important topic unlike performance which A) is because some people never want to upgrade and B) because the engine has problems which are being worked on. So nothing new on that front guys...
That aside, blackdog, could you go back a few pages and read my suggestions? Eventually it's best to make a sub-forum for co-op. I listed the reasons in my post
here.