Riot, never use ARSM again.
It is the most lazy, toxic and boring and unfair mode I have ever played. Just like with ARURF ruining URF you somehow managed to ruin SM with AR. The game is decided before you go into a game. Every game has ended at 20 minutes with one side surrendering because of how unbalanced it is. You either get destroyed or you destroy and in both instances it is not fun. You don't really get a lot of satisfaction from beating Nami top with Yasuo over and over and over until 20 minutes, Don't use this mode again it's horrible i'd prefer old dominion over this pile of shit.