no, set f5 to f4. after that, play the game 1-2 hours, then you set f5 again. This issue affects not only the Quick Save but also the auto save, normal save via the menu option, as well as saving using the console command. The save function actually does create a tmp save file. This indicates that the functionality itself runs correctly, however the save process is not completed for some reason. I seriously do not believe that simply changing the config from F5 to F4 and then back to F5 resolves this issue. It definitelly more complex than that. Mine's crashes only on quicksave, but i wanna help if it works