I am having some issues with load time in my Miro board. Even with 3 users, certain images seem to be loading perpetually, while others are very slow to materialize. I have a good internet connection.
What is causing this? Too many elements? Too many frames?
How big (quality-wise) are the images? You may want to do some simple testing with a new board by adding one image at a time and seeing at what point the performance slows down. You might be able to improve performance by reducing the size of the images if that does not result in a reduction in the user experience.