do you not get s-ranks if you recently got one?
so maybe 2 matches ago, i got a s- rank, got 5/1/5 grabbed every dragon and had cs of 89, the game i just had however i was 16/2 and grabbed all the dragons and had 104 cs, i did way better that game then my 5/1/5 game but only got an A+, the only thing different i suppose was that we grabbed rift in the 5/1/5 game, but i literally had 3x as many kills that game and 20 more cs compared to the 5/1 game.