Analytics API paging object confusion with pageSize

Trying to pull WEM adherence data using the GET /api/v2/analytics/wem/queues endpoint. The documentation says pageSize defaults to 250, but I’m explicitly setting it to 1000 in the query params. The response comes back with pageCount: 1 even though I know there are over 500 records.

Here’s the call:
GET /api/v2/analytics/wem/queues?pageSize=1000&dateFrom=2023-10-01&dateTo=2023-10-31

Is there a hard cap I’m missing or am I interpreting the paging object wrong?