Starting with Season 16 of Competitive Play, Grandmaster players (players with SR >4000) will no longer be able to queue for competitive matches in a party size larger than two. In an effort to have higher quality and more fun matches for everyone, Overwatch actively tries to place parties of similar sizes together to create fair matches. For the vast majority of players this feature of the matchmaking system works reasonably well. For our Grandmaster players, making fair matches is always more difficult simply because there are fewer players of their skill level to place together. It’s even harder if we allow grandmasters to queue with larger groups. We believe this change will help create better quality matches for all Grandmaster players.
Thank you and please continue to share your feedback about Competitive Play!