Consultants use methods like query optimization and implementing aggregations to enhance report performance. They reduce dataset size by filtering and transforming data during the import stage. Incremental refresh is configured for efficient updates, and DirectQuery is utilized for real-time data analysis. Power BI consulting services leverage Power BI’s performance analyzer tool to identify and resolve bottlenecks. DAX expressions are optimized to minimize processing time. They also recommend hardware upgrades like Premium capacity for demanding workloads. These methods ensure that reports run efficiently, even with large and complex datasets.