Performance may be improved by Power BI developersemploying capabilities like aggregations and incremental data loading, improving DAX (Data Analysis Expressions) searches, and optimizing data models. They use effective data retrieval techniques like Import mode and DirectQuery to reduce the amount of graphics on dashboards. The Performance Analyzer tool is also used by consultants to find bottlenecks and speed up report rendering. The user experience is improved by these enhancements, which guarantee quicker, more responsive dashboards.