Star Bonuses
To go from one rank to the next—say, Gold 10 to Gold 9—you will need to gain three Stars. You’ll gain one Star for each match you win, and lose one for a loss. At the start of each season, players will be awarded a Star Bonus based on their performance the previous season. This Star Bonus acts as a multiplier on the Stars you earn from each win.
For example, if you have a Star Bonus of 5x and you win a game, you’ll get five Stars instead of one. If your winning game is a part of a win streak, you’ll get double that: 10 Stars! Upon hitting each ranked floor in your climb, your Star Bonus will be reduced by one. When playing with a Star Bonus you’ll be matched by your matchmaking rating (MMR), meaning you’ll be matched even more precisely with players of your similar skill level when climbing!
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So for example bronze 10 was with x4 Star bonus
bronze 5 → x3
silver 10 → x2
silver 5 → x1 (if it win streak it means 1 star x2=2 stars…)