Real User Monitoring (RUM) playback allows you to view your application performance across various locations in finer detail. Just choose a time frame you'd like to monitor and RUM playback will render your application performance across the locations along with the response time variations in your application. 

For instance, if you were to play back your application performance for the last seven days, you could view the variations in your application response time across various countries for each day. You can also assess performance data anywhere from the last hour to the last 30 days with fine details. These details enable you to visualize subtle performance changes across various locations and assist you in taking immediate actions.