What challenges do Power BI developers face with performance optimization?

Performance issues are a common challenge in Power BI development, especially with large or complex datasets. Dashboards with numerous visuals, calculated columns, or multiple relationships can experience slow loading times. Power BI development must employ advanced optimization techniques, such as reducing relationships, using aggregations, or enabling incremental refresh. DirectQuery connections, while helpful for real-time data, often lead to slower performance due to continuous querying. Balancing dashboard complexity with responsiveness requires extensive testing and fine-tuning. These challenges can extend development timelines and limit the ability to deliver highly interactive, feature-rich dashboards.