If you have lots of different page URLs the number of visits displayed in the User Flow report might be slightly different to the number that you see in the visitors overview. By default, we look into the top 5000 interactions per step. In most cases this covers most of and user paths. You can change this number to recognize more or less interactions by changing the following configuration in the
[UsersFlow] UsersFlow_num_max_links_per_interaction = 5000
Setting a lower value will make the report generation faster while increasing this value will slow down the time it takes to generate this report.