Season 6 Challenges

So far have really been struggling with season 6 changes. Every game plays out roughly the same at this point in the sense that either victory or defeat the game is pretty well decided around the 12-15 minute mark. League of Legends now feels like you're either a snowball destroying everything in your path once you get a kill or you're getting run over with little chance of making a comeback. I am curious if this has been most player's experience so far this season or if I am just really struggling to adapt to the new season.