Turned Game Mode Off and lasted about 10 minutes before getting the error:

Unexpected error has occurred
ffxiv_dx11.exe+14A8EB3
ffxiv_dx11.exe+14A6B0F
ffxiv_dx11.exe+1497960
ffxiv_dx11.exe+1494247
ffxiv_dx11.exe+1498BC8
ffxiv_dx11.exe+14D533D
ffxiv_dx11.exe+14D7BF2
ffxiv_dx11.exe+14D7B40

the game visuals froze, error message came up on top of the game window, and audio still played
was in Limsa, at the market board with crafters nearby, and could still hear the sound effects of them crafting things, and the footsteps of other players walking by