Sets max number of users exported at a time during CSV export. This filter is used by the Members export in the core plugin as well as a few of our Add Ons with a user or member export option.

apply_filters( 'pmpro_set_max_user_per_export_loop', int $max_users );

Parameters

$max_users

int; Maximum number of users to include; default is 2,000.

Source

File: https://github.com/strangerstudios/paid-memberships-pro/blob/master/adminpages/memberslist-csv.php