Terrible lag and then runtime error

I dont know why but this started happening since the last patch the game starts to lag and then crashes i get the following error:

http://img9.imageshack.us/img9/567/eolu.jpg

Im running windows 64 bits, these are the error details given by windows.
Firma con problemas:
Nombre del evento de problema: APPCRASH
Nombre de la aplicación: ffxiv.exe
Versión de la aplicación: 1.0.0.0
Marca de tiempo de la aplicación: 5266ada2
Nombre del módulo con errores: ffxiv.exe
Versión del módulo con errores: 1.0.0.0
Marca de tiempo del módulo con errores: 5266ada2
Código de excepción: 40000015
Desplazamiento de excepción: 00861c31
Versión del sistema operativo: 6.1.7601.2.1.0.256.48
Id. de configuración regional: 3082
Información adicional 1: 3a5a
Información adicional 2: 3a5ac0e181e4a15cafe2e9e533f213f9
Información adicional 3: 69ba
Información adicional 4: 69bac9b79a123bbb3f46f492a1c5c936

Yep getting the exact same error here, only after the latest patch

EDIT: more details

When I log in it lags a lot for a couple minutes (as in video lag not latency lag) And then I get a runtime error. Its ran nearly perfectly up till now, I havn't changed anything

Greetings,

It seems that there have not been any further posts about this concern being an ongoing issue. Because of this, we are considering it to be resolved. If this does continue to be a concern, please create another thread to further discuss resolutions or contact the Support Center at support.na.square-enix.com for assistance.