I had problems with the game crashing consistently after 1/2 to 2 hours of play whenever I Town Portal, Fast Travel, Waypoint, loading into Dungeon from open world. Crashes would either be:
- Freeze at the loading screen
- Game Crash with out of memory message
- Game Crash with no message
- Windows Blue Screen of Death
My resolution was to enable Windows Page File system, to the Auto setting. This change eliminated Game Crashes
I had previously disabled Page File to reduce writing to my SSD HDD. But apparently Diablo 4 uses no more than 4 Gig of memory, and the rest must be Page File. Maybe there is a command line switch to get around this, but unsure.
In windows to get to Page File: Settings, About, Advanced System Settings, Advanced tab, Advanced tab, virtual memory, Checkbox ‘Auto’. Close out and reboot.