Answer by Michael F. ·
the visually complete time provide you the information how long it takes to display/render the website objects, which you see directly on the screen when you open a webpage. You will find a complete description of this metric here: https://www.dynatrace.com/support/doc/synthetic/reference-information/visually-complete-and-speed-index-metrics/?_ga=2.189532653.710125928.1573635093-317987373.1520607967
The Response time provide you the information how long it takes to execute your whole transaction step. For example when you load a webpage and you validate a specific element on the page or wait for a page complete event of the browser, That belongs to your single actions, which you included in the transaction.
For this reason, the response time is usually higher than the visually complete time