sigh..using Arc and choose "play while download"-after almost a day waiting it get 80% and let me start play already,while it downloading the remain 20% ...
but after few hours playing,it suddenly hang and close the games,and while i try to play again,it's not in Arc games list already,only install option available ..click install and it start to download from 0% again ...didnt it store the 80% earlier ??anyway to avoid the long wait again ?