Honestly? maybe your computer can't handle the game sometimes. If problem persists then you could try defragging your computer and running some basic maintenance procedures.
If it's not you're PC then the auto save date might've been corrupted on a hiccup. I'm not that familiar with PC gaming but maybe you could delete the data and see if it creates a new auto save.Sir i am 100% sure that my pc can handle this game, the problem is on game the autosave cant save anymore and i dont know why =(
ok sir i will try,i dont know but its so hard to start again =(