Block options:
Media at start: 12
Media to reveal: 12
Image Generation Method: Image Helper (or square Thumbnail Type)
Width: 600px
Height: 600px
Crop: Yes
Masonry Random Heights: 100%
Enlarge selected Thumbnails: Yes
Patterns
Phone (0-575px): 1
Tablet (576-991px): 7n+2
Desktop (992px+): 14n+4