Gridstack view does not display all items

Problem/Motivation

I need to create a grid that will ultimately have a large number of photos and captions to display (~100). The Gridstack grid will not display more than 11 at a time.

Steps to reproduce

Create my content type. Fill in with content. Create view, select Gridstack, fill in all settings.
Grid displays normally but only has 11 of the (now 18) items defined in the view. Tried selecting exact number of items to display, tried setting "display all" but no joy.

Proposed resolution

Is there another setting to fix this?

Remaining tasks

n/a

User interface changes

n/a

API changes

n/a

Data model changes

n/a