I am playing on Hard, Epic Store release, and had the game completely lose all saves / game progress and gray out the save / load options, WHILE PLAYING - After about 6 hrs of gameplay, while playing, the save menu shows no previous saves, and load is now grayed out.
Also, again, if I press Quicksave, I get the Save Unsuccessful message.
The Save Game folder is there, contains lots of folders / files, but I cannot continue, load, and even if I do select Save, it says Save Successful, but if I chose Save again, no previous saves are listed and Load is still grayed out.
So all gaming progress has been lost, and I'm REALLY not feeling like starting over again.
You can watch my gameplay here, and see how I have saves, am able to save, then suddenly while playing, saving shows no previous saves, and no LOAD option:
https://www.youtube.com/watch?v=GjOInpMNZSQ