To optimize performance, consultants should start by reducing the size of datasets, importing only necessary data. Use query folding and data source optimizations to push transformations back to the source. Simplify the data model by avoiding excessive joins and calculated columns. Optimize DAX calculations and use measures over calculated columns. Visual performance can be improved by limiting the number of visuals per page and removing unnecessary interactivity. Test performance regularly using Power BI consulting Performance Analyzer, making adjustments based on user feedback and performance results.
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