Matchmaking during Preseason 2016

Almost every game I play this preseason seems to be a stomp.... I could say my bottom lane consistently goes 10-0 or 0-10 before 10 minutes. As a Udyr main, a farming jungler, I feel useless most of the time, before I get any sort of power spike the game is either won or lost already. I'm wondering what happens to matchmaking during preseason, because before preseason started the play of my teammates was pretty consistent... I mean they weren't superstars, but my bottom lane didn't go 0-10 before 10 minutes (or 10-0 neither). So any insider have a clue of the Matchmaking System during Preseason? (Also I was Gold 4 before preseason started, overall play of everyone in my ranked games was pretty consistent, then all got interesting.)