DirectQuery allows Power BI to fetch data directly from source systems in real time, but it often causes performance issues when working with complex queries or large datasets. Power BI consultant implementing DirectQuery for clients in industries like logistics or finance, which demand instant insights, must balance the need for real-time data with system performance. Optimizing source databases is often required, adding to project time and costs. Moreover, not all features, such as complex DAX calculations, are supported in DirectQuery mode, limiting the tool’s flexibility. These challenges complicate the delivery of efficient real-time reporting solutions.