Autosave options

i don’t usually use the autosave, but lately the game crashed a few times and i lost a lot of playtime. So i turned autosave on. What i’d like if posiible is to make the " Game minutes before autosave" optional, with 0 for example disabling this option, so only the other autosave option (Real minutes) to remain activated. If it is already possible, just tell me how.