This method will allow you to :
Keep the animated Gifs
However, your Google Slide will be inaccessible on the screens if you lose your connection.
On your document
Go to the Google Slides document you wish to distribute. If your document is private, you will have to share it in reading mode with our service account email@example.com
Click on "To Share"
Add firstname.lastname@example.org as a read-only member
On Comeen Play
Add a content "Google Slides" :
Select "Import via a share link"
If you don't have a Google Account connected on Comeen Play, you can just share your Google Slide read-only with email@example.com
Copy and paste the link of your Google Slide
Then click Save, and the Google Slide will start playing on your screen in a few minutes!
Every time you add or remove Slides from your Google Slide, it will take a few minutes to synchronize on your screens.