Power Query Excessive Time to Refresh

[MikeDBMan]

I have a model I built with Power Query in Excel. The thing takes forever to refresh and with extremely small amounts of data. I feel it may be because of some of the relationships among queries that I set up but I am not sure how to attack trying to figure out why/where it is so slow. Does anybody have suggestions for analysis?

 

[jdellasala]

Try to figure out what line is causing the slowdown, and before that line add the code

Table.Buffer(PreviousStep)