For players whose ranks are far away from their MMR: RR gains will depend more on individual performance, instead of round differential. You should also see your rank and MMR converge faster.

Context: We received feedback that players felt like they would not be rewarded for a good game, or punished too harshly for a bad game during their ranked climb.

If a player's rank is below their actual MMR, they will be rewarded more for a good game. If a player's rank is above their MMR, they will not be harshly penalized if they lose, but perform well in that match.

https://playvalorant.com/en-us/news/game-updates/valorant-patch-notes-6-0/