Ever gained or dropped a ton of SR during a winning or losing streak in Overwatch Competitive? That is all in the past now as Blizzard has already drastically toned down the winning and losing streak system, which means players will not gain a bulk load of SR or lose a bulk load of SR in Competitive games.
In response to Overwatch Game Director, Jeff Kaplan's reply in a Overwatch Forum thread on smurfing, the game's Principal Designer Scott Mercer introduced to Overwatch players the updated matchmaking that came along in patch 1.10 update in the Overwatch Forum, and explained why the Overwatch team decided to do so. "While this streak multiplier has been working well in the “smurf” case, win or loss streaks can also just naturally occur when the matchmaking system has already properly identified skill. After all, the matchmaker is trying to place in you fair matches where you have a 50% chance to win. It’s rare, but sometimes you flip a coin 5 times and it lands on heads every time. So, when these natural streaks occur, the multiplier has been accelerating gains and losses away from your “true” skill. You end up having a larger variance in skill rating over time, which in turn hurts the overall quality of the matches," Mercer explained the reason behind the changes.
Mercer also explained to solution to this problem in his post. "Therefore, we’re changing the tuning of the streak multiplier to be quite a bit less aggressive. You now need to win or lose more games in a row before any multiplier is used, and it scales up at a slower pace. Furthermore, we will now try to only use the multiplier in cases where the matchmaking system has some confidence that the player’s MMR and skill are wildly mismatched. In cases of natural, random streaks, you ideally shouldn’t see any acceleration either up or down at all. We’ll be monitoring how these changes affect overall match quality going forward, and continue to adjust tuning over time to improve the fairness and quality of Overwatch matches. Thanks for the continued feedback, and good luck in your matches!"
What the changes to matchmaking in Competitive Play means that you won't be able to soar up in ranks unless you can prove that your skills are of a rank higher than your current one. If your win percentage is much higher than your loss percentage, it is more likely that the system will grant you a win streak multiplier to move you into a rank worthy of your capabilities.