I had a winning series of abouth 10 wins straight on monday. Then I logged in to play ranked on tuesday and the first 3 games I played within the league were a joke. One we lost by far, and the other two were unbalanced in a way that “we lost by far” couldn’t even describe it.
That said, I think this was a good portion of bad luck, mixed with some confusion of the match making algorithm because so many new (and old) players came (back) to playing PvP again because of the leagues. This will settle in a few days, I guess. If it ever was a problem and not just pure coincidence.