I've been finding that the underwater crater has some major fps issues just to look at when I'm on the island with Trike's & Dilos, its also pretty bad at the rocky island, I think it may be the excessive use of coral? And I've managed to locate a shallow path of water I can take to get to all islands without any fear of megalodons, but that also means no itchy's - it'd be great if there were less megalodon spawns or if itchy's spawned elsewhere, I find taming them a little tricky when there's megalodons everywhere! D:
I've been using this map for at least half of my game time in ARK, and I've noticed that Trex/Carno island almost always has a Trex on it, there's next to no herbivores on that island most of the time because the Trex seems to be killing them all before they get mate boost. Maybe there should be more herbivores? Or a lesser chance to spawn carnivores?

Just a little bit of constructive criticism I've accumulated over my time on the map. Now I'll head over to suggestions :)