Having problems with downloading speed


I just updated popcorn time and now as i try to stream i get stuck on either " Getting metadata" or i start to stream and my Kb/s is constantly changing from 75 to 1700. And after about 5-10 min into the movie it drops to 0 kb/s and refuse to work. i have tried to download earlier version, restarted computer and internet, restart popcorn time. But nothing works, what should i do?