Autosave settings

I recently had a crash related to dx11 and it's not common, but when I returned to play there was no autosave anywhere near where I was. There need to have an autosave setting that allows me to adjust for every 5min, 10, 15, 30, 45, 1h. Settings file didn't appear to have anything named autosave either. Left to me, after this abnormal occurrence, I'd leave the autosave for every 10 min.