500 Flat ping DCs

1 in every 10 games or so i am getting random DCs with 500 ping flat. My game never reconnects on its own, I always have to exit and then click the reconnect button. After i Click reconnect it doesnt let me back into the game. comes up with an error that refers me to a forum that has nothing to do with my problem. I never ever disconnect or afk in my games. Because of this problem im getting leave bustered. Its not my internet because i upgraded it to the highest package after the first low que priority. I cant find a single forum that has the same problem or a solution for that matter. I cant have this keep happening for no reason. My internet never disconnects when this happens just the league client. Often i can never get back into the game resulting in 9 afk reports. I NEED A SOLUTION or a leave buster lift. out -.-