Time limit needs to be a factor for Champion Mastery Grade!!!

Its annoying when im doing so well in a game and the enemy surrenders at 20 or low 30s. Its almost impossible to get a S rank at the 20min mark.

The problem is low elo games only last 20-30mins. Which isn't enough time to get the farm, kills, ect. You need to achieve a S rank.

Out of my 10 normal matchs only 1 was higher then 40mins

Many times people just give up and surrender so you do not get a long lasting game.

Whenever i do get a s rank i achieve it in a high 30 or 40mins game.

Its almost impossible to do as good as the average player when you get half the time