I encountered a problem for the first time today. I can boot the game just fine the first time during a computer session, but if I go afk for an extended time (run an errand, take a nap) with the game booted up it freezes, goes to the desktop (technically, the game is still the front window, but it shows the desktop instead). I have to use the Task Manager to manually cancel the game.
If I boot it back up after this I get a BSOD just after the Square Enix logo pops up.

In the past few days I have done a windows update for a new C++ package, I updated the Razer drivers, and today I installed a video compression software. I did a search for the latter and it hasn't caused any issues that I've found.

This bug has only shown up today. I've been leaving the game running unattended all week without any issues (not the whole time), but today it's causing issues.

I should point out that the BSOD only occurs if I have to close the game forcefully using the task manager. I disconnected earlier and it booted back up just fine.