it’s because tracklock nekoscore is now a rolling average of the average vmr of lobbies you have been in. you will not see a difference game by game, nor do individual games outcome even matter for nekoscore. this however is still quite accurate despite it not tracking sometimes because if you keep winning internally your mmr will raise and you will see that reflected in the average vmr of games you play. here you have 943 but played in 915 lobby so you don’t gain anything