The Specify the Number of Identity Matches found Displayed in each Location setting allows you to specify the maximum number of matches displayed in the results view, as well as whether Identity Finder should stop searching the current location once it reaches a maximum match count. By default in Home and Professional Editions, this setting is enabled to perform a complete search and display all the matches in each location. In Enterprise Edition, this setting is enabled to perform a complete search of each location but to display a maximum of 99 matches per location. You might want to enable a different option depending on your needs for reporting or speed and performance.
There are three options:
Complete search: Identity Finder will search a location completely and list every match found.
Complete with partial view: Identity Finder will search a location completely and display the total count of all matches found, but it will not list every match found individually. Summary reports will be accurate, but only the first Maximum Matches will be listed individually in your report. This option is best when you have locations with many matches as it will make analyzing your results easier. This option also improves memory performance over complete search.
Partial search: Identity Finder will search a location until it finds the first Maximum Matches in that location. It will then skip to the next location. This can greatly improve performance if you have locations with many matches. Note: all locations will be accurately identified but not all matches will be listed. This option improves memory and speed performance over Complete with partial view.
Maximum Matches is the threshold that specifies when the bottom two options become active. This threshold dictates when Identity Finder will restrict the number of identity matches found or displayed.

Below is an example of what restricting the number of identity matches will look like when Complete with partial view is selected. It is displaying only the first 10 matches because more than 10 were found:

To view or change these settings, click the Settings button on the Tools and Options ribbon.