So I'm guessing that you just started playing stormblood after you returned? If so, you may need to consider updating your NVIDIA driver.

Also I'd get an app to monitor both graphics and processor temps, and look at them the next time the game crashes.

Also are you running windows 10? If you're returning after a extended break, the creators update to windows 10 may have installed as an included update. This thing runs havoc in alot of games, including FFXIV.