The archive with DX 11 takes ≈55 GB of disk space with the latest mods. I don’t remember exactly how much disk space the game takes up when unpacked. The editor is really good, but after fine-tuning the characters, the girls appear in the game, to put it mildly, not exactly the ones created in the editor) I don’t know about the version of DX 15, but there were a lot of artifacts and crap in DX 11. Left the update until better times)I don´t know this.
There is another similar Illusion game "Play Home", but never tried.
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By the way, I still successfully use HS 1.20. with all the mods installed, the game takes up ≈25GB on disk, the editor is a little worse, divinely optimized, there are no artifacts or flaws, the girl created in the editor appears in the game exactly the same as she was created in the editor.
In short, it would be ideal if the HS 2 character editor would be in HS 1.20