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In my opinion, it's the same as NTCore. It increases the memory usage for older programs from 2 to 4 gigabytes. And the description on Playground is inaccurate.
I downloaded NTCore, patched the engine with it, and compared it with the patched LaaHack - they are identical. And there is indeed an error on Playground, not only with the amount of RAM, but also with the patching process itself.