GhostSlayer

Hey Guys Sorry i dont know if this is the right place to put this Post, but im having abit of trouble with Arma 3 & Arma 2 Oa in Some Servers 9/10 times i cant completely load the Mission File. it gets about half way and freezes and then Kicks me for the error "Connection to Host was Lost" Does Anybody know any fixes to this error? Has Anybody got the same Problem?