An extra-large or XL island uses memory in a different way from other islands. Smaller islands work by loading everything into memory and keeping it there all the time. The memory bar at the top of the screen reports the amount of memory used and available. For larger islands, unused and unseen props and landscape features are not kept in memory. The memory bar is still in view, but you can also use a heat map to see a color-coded overlay that shows which parts of the island are more loaded.
XL island
An extra-large or XL island uses memory in a different way from other islands. Smaller islands work by loading everything into memory and keeping it there all the time.
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