For those still confused in how to use a save, (I get it) you load the save from within the game, actually before starting the game. Now I have seen some people speak about cheats and cheat engines and whatnot. I must have scanned all 10 pages of this thread and I have absolutely zero idea what they are speaking about, the files, or how to use those.
There's also a "full save" somewhere that has like modeling scenes instead of the sister scenes. I think that scene was mistakenly put here and actually has the scenes from another game or something.