Remove the damn duo already.
It interferes greatly with matchmaking, putting lower elo into higher elo. I duo with a good player and ends up with super awful teammates who is not supposed to be there and enemy miraculously don't have any weak player. That's bullshit. Most of all, it encourages smurfing, therefore encouraging toxicity. Remove the duo system. Your statistic tells you that duo doesn't work. So remove it. I told you this years ago. And I still see a damn duo system still here. Any fucking reason why it's still here? If there's none, REMOVE IT! Jesus Christ.