Im in the middle of my ramp up and for two days my shift graph is stuck at 7.87.
But my th rate is 13..
Why is that?
Not sure what you are looking at it. It would help if you post a picture. But if it's the red line on the graph page, that is just an average of the whole graph which is about 23 or 24 days, so it takes time for it to move up.
Yeah it's not the value used for the next reward - the current 5Nd point is always moving (over 1000 times a second

) and only calculated when a reward is processed.
The red line is the whole graph - as beltsniffer said.