Dynamic Groups taking ages to update?

Summary

Anyone else having a problem with dynamic groups updating in a timely manner?

Content

I am having an issue in my LearnCenter where dynamic groups are taking several hours to update. 

typically, my API runs at 7:15 am bringing all new hires into the LearnCenter and they are assigned specific training based on the groups they are in.  Generally they are notified that they have been assigned the training no later than 9am the day that they are loaded in.  Today, my 7 new hires loaded at 7:15 am and here it is almost 3:00 PM and none of their training is loading because the dynamic groups aren't updating.  They are required to take COVID training before they are allowed to work so they are just sitting in the stores waiting