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What is the most effective first step when optimising a slow Power BI report?

  1. A Removing unused columns and adopting a star schema
  2. B Adding more visuals per page
  3. C Switching to DirectQuery
  4. D Increasing the refresh frequency
Answer

Removing unused columns and adopting a star schema

Model-level fixes usually give the largest gains. Every unused column costs memory and refresh time.

All Power BI MCQs

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