Q: To increase the speed at which Google Analytics compiles reports, what action could be taken?
A) Remove any Secondary Dimensions you have added to the report
B) Choose “Greater precision” in the sampling pulldown menu
C) Remove any filters you have added to the view
D) Choose “Faster response” in the sampling pulldown menu
Correct Answer is D) Choose “Faster response” in the sampling pulldown menu.
At the top of the report, below the date range selector, select Faster response, less precision or Slower response, greater precision. Your data automatically refreshes using the new setting. Your preference is saved across all of your reports, but resets after you close Analytics.
Read more here: https://support.google.com/analytics/answer/1733979