HISM or ISM for a room generator

Development Asset Creation
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This room generator will be the first piece of a Procedural Dungeon Generator. Are HISMs good for “Building” meshs or should I go with ISMs, or maybe just using a BP actor with a StaticMesh?

I am trying to create a Room Generator for a side project that may turn to something more. I will admit that I am using Claud(I like their visual style) for the code to start, as while I can create Characters and Widgets adn such, the “mathing” of a Dungeon Generator is far beyond my Ken. So I know there will be “some” issues, but as I see it I can refactor it.

I am currently using HISMs for the FloorMesh. Wondering if I should go with ISM instead. Before I get too deep into the weeds, I am wondering if HISMs are good fit for this, as when searching online I see HISMs used for Characters or Trees or other such environment meshes. With my room generator, I will have 5 different Mesh sizes 100x100, 100x400, 200x200, 400x200, 400x400.

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Hey there @DreadDev! Welcome back to the community! Assuming your use case is really just simple set pieces/rooms, HISMs are honestly the best path forward performance wise. HISM can handle per instance culling and LODs and handling any logic with the instances directly. Since you didn’t go into detail about anything other than the floors themselves, I’m assuming they won’t need any special logic other than the spawning.