Hi @tsdick ,
Do use SLICERS with some caution. Be aware that if you have many large slicers on one report they may start to slow performance as each slicer selection causes full scans of each other slicer and the visualizations on the page.
To avoid this happening, you can create views of the SQL Server tables used in the report, then used these views as the datasources for the report.
For more information, you can refer these documentations:
Power BI Performance Tips and Techniques (pragmaticworks.com)
Solved: Small datasets, many queries/steps or large data s... - Microsoft Power BI Community
Hope this helps you.
Community Support Team _Yinliw
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