So this issue started yesterday (8/7/2018). Was doing Rathalos Extreme, no problems at all until I went to leave the instance. Upon leaving, the game hung and force closed itself, no error message, no nothing. Upon trying to relog on that character, it gets as far as the loading screen and does the same thing and hangs for a second and closes with no error message.

To confirm it was just that character, I logged into my other characters on the same server and loaded in just fine.

I left it overnight and tried again today, and was able to load in just fine and run duties without issue. And then out of nowhere, the game does it again and once again I'm locked out of that character.

Only information I've been able to gain is from the Windows Event Viewer:
Code:
Faulting application name: ffxiv_dx11.exe, version: 1.0.0.0, time stamp: 0x5b62ab05
Faulting module name: ntdll.dll, version: 10.0.17134.165, time stamp: 0xf4df6dc2
Exception code: 0xc0000374
Fault offset: 0x00000000000f4d1b
Faulting process id: 0x21ec
Faulting application start time: 0x01d42f788473423b
Faulting application path: F:\Windows\Program Files (x86)\SquareEnix\FINAL FANTASY XIV - A Realm Reborn\game\ffxiv_dx11.exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report Id: 0a442a6c-9a2f-4db7-bf82-b7d312ed6ec7
Faulting package full name: 
Faulting package-relative application ID:
This error has not shown up at all since before yesterday.

Things I've tried to fix it:
-Switching from DX11 to DX9
-Compatibility mode set to Windows 7 (gave a DX11 error doing this)
-Logging into other characters
-Reset my PC