I am having the same issues. It's usually the DXGI Hung error. It seems to happen more frequently since the season 4 patch but I did have some pretty infuriating crashes while playing Ranked in the previous seasons. I am considered a Whale when it comes to spending money on this game, but i can say for sure that unless they find a fix then i won't be spending anymore money on this. Shame on the developers for punishing players for issues they have no control over. If i can't play ranked then i most likely wont play anymore.
