Sorry if this is a TerraForged issue but it seem that other mods are working fine with it. Even tho I disabled Create's rocks in the config, they are still spawning while copper ore isn't. Reducing the amount of spawning doesn't work either.

Ok then, I'll write it on the TerraForge issue tracker, if they even have one.

They don't have the issue section open, that's why I'm here (and in their discord).

I reached out to TerraForged discord server.

It's understandable that small pockets of stone variants benefit from not having ore spawn on them, but TerraForged takes stone variants and generates them as layers of stone throughout the world, resulting in sparser ore spawning in general.

But that's not the issue here, right? Even if the stone gen is disabled in the config, it is still generating stone.

I think that's more of a "TerraForged not recognizing Create config" than "Create not totally disabling the stone variant when I disable their worldgen feature" issue. TerraForged is the one generating those stone layers, after all.

The stone layers are added by the forge:wg_stone tag in create's jar. If you want to stop certain blocks generating in the layers then remove them from that file or make a datapack to override the tag with the blocks you do want.