Unranked MMR and ranked MMR are indeed separate and do not directly affect each other. This means that your performance and matchmaking in ranked games will not impact your unranked MMR, and vice versa.
In terms of how unranked MMR is calculated, it operates on a different system compared to ranked MMR. Unranked MMR takes into account your performance in unranked games, such as win/loss ratio, individual performance, and the MMR of your opponents. However, the exact details of the calculation are not publicly disclosed by game developers, so we can only make assumptions based on observations and experiences.
Speaking from my personal experience and observations after playing over 5,000 unranked games across three different accounts, I have noticed that unranked MMR tends to have a cap around high diamond MMR. This means that once your unranked MMR reaches a certain level, you are unlikely to be matched against players with higher ranks, such as Masters.
However, it’s important to note that this observation may vary from person to person and could be influenced by various factors, including the player population in your region and the time you play. Additionally, the matchmaking system aims to provide balanced and fair matches, so it may prioritize finding opponents with similar skill levels rather than strictly adhering to the MMR cap.
It’s worth mentioning that the MMR caps and matchmaking algorithms may differ from game to game, so it’s always advisable to refer to the specific information provided by the game developers for accurate details.
Unranked MMR does not directly impact your ranked MMR, and the calculation and matchmaking systems for each mode are separate. While unranked MMR seems to have a cap around high diamond, individual experiences may vary and are influenced by several factors.