I'm pretty sure 9/10 of my ranked games are completely over by 10 minutes

With one team being ahead 10+ kills, because games (somehow) snowball way harder than they did last season, and none of the new comeback mechanics work to facilitate comebacks when the losing team is that far behind.

In most of these games, I don't even have a chance to contribute anything, because two of my lanes are either completely destroyed or destroying the enemy before I even hit level 6, and I'm at such a huge gold disadvantage, despite winning or going even, that something can just flash on top of me and one shot me.

Something really needs to be changed to stop allowing games to snowball like this.