Elastic Synthetics is a tool that allows users to monitor the performance of Kibana dashboards by simulating user interactions and measuring load times across various global locations without requiring any installations. This capability helps determine if perceived dashboard slowness is due to actual performance issues or external factors like network connections. Users can set up synthetic monitors that execute at specified intervals, providing insights into average loading times and identifying potential bottlenecks. By utilizing Elastic Cloud's Uptime feature, users can easily configure and manage these monitors, select locations of interest, and employ machine learning to detect anomalies in page load times. Additionally, detailed performance breakdowns, including step-by-step execution with screenshots, assist in verifying and analyzing dashboard performance across different regions.