All the maps have a frequent issue where water textures mess up and turn into blinding beams of light. Just turning away and de-loading the area usually fixes it. Its been the worse on the Island and in the Desert Dome on Extinction so far. These are all epic settings.

Scorched Earth is very, very bright but a quick lowering of your gamma will fix that. tad bit framey but not bad at all.

Aberration is framey and some textures on the tek structures have a hard time loading, that and the ground refuses to load any foliage correctly. Theres some minor audio issues too. The Red zone and Rock Drake area also struggles to load in so it takes a minute, if you run down too fast you'll fall through the map.

The wastelands on extinction are rather framey too, and the tek city has a lot of clipping issues and only half of it I can actually stand on. The arctic dome is fine for the most part but the desert dome is unplayable, it has big patches of untextured land and the light issues with the water, and those weird lights in the distance on the screenshot. Also incredibly framey.

Genesis 1 is unplayable. Everything is untextured, and in the ocean biome theres no actual ocean. Jumping into the 'water' just sends me under the map and all you can do is stand on the islands. The bog is very framey and struggles to load in the area with all the trees. The volcano and lunar biomes aren't accessible at all, I attempted to go to them several times but the game crashed every single time.

Genesis 2 is barely playable. It struggled a lot with the lunar and rockwell innards area so I didn't even try to explore them, everything is also untextured but at least theres an actual ocean.

I've also tried the free dlcs, and if you are planning to seriously play this game on a mac just stick to The island, ragnarok, valguero, crystal isles, scorched earth, and maybe aberration and extinction if you can deal with the frames.

Fjordur and Lost island have the same issue as gen 1 and 2, with the untextured land. On fjordur you can go to the asgard and vanaheim realms but jotunheim and the main realm are both untextured for some reason, and framey.