slow internet connection

when i playing coop mode i have slow internet connection this might affect your gameplay, i tested supremacy mode and in csgo good nice and stable ping and i have 70mbps with wifi,  in menu pıng sıte  is default(41ms(germany)) i playing coop mode my ping being 241ms and my game is not laging game its just freezes me but everthing normal other me. (in supremacy mode my ping is normal and dont have slow internet alert)