Hello Zoe,
Welcome to Samsung! Thank you for choosing our company. I hope you are enjoying your experience so far. To answer your query, Why does the ice maker take so long to fill the ice tray? And if there's a way to increase the production of ice.
To answer this, I am providing this link to guide you on the issue.
The ice maker is making some ice, but not enough.
https://www.samsung.com/us/support/troubleshooting/TSG01001012/#ice-maker-is-making-some-ice-but-not-enough
If assistance is needed, please reach us with the following options to further assist you:
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
Reference number:
1144761223
Thank you for choosing Samsung. Have a great day.
^^Ross