Forum Discussion
Slow performance within Power BI Desktop, Query editor, Applied Steps.
I am having the same issue. I am making simple updates in Query Editor, formatting data in 1 specific column and it could take hours for it to me done.
It seems that the speed has declined with each new version of PowerBI.
I think you have a good point about the number of steps within a query.
I definitely need a resolution soon.
Cheryl, South Florida
Not a solution, but some discussion. Power Query is very aggressive about reloading the query preview. It seems that each additional step can result in re-reading the source and re-applying intermediate steps. If you have expensive query steps or a large data source, I've seen this slowdown. With well-optimized transformations and sufficient disk throughput, I don't see this sort of slowdown.