Fake Shadow Produced By The Sun?

Time: Always
Frequency: Always
World name: Odin EU
Character name: N/A
NPC name: N/A
Monster name: N/A
Class/Level: Any
Party or solo: Any
In-game time: Any
Area and coordinates: Anywhere outside (I've only been to Gridania + Ul'dah surrounding areas so I can't account for other areas)

Steps/description:
1. There is a massive shadow going all the way through maps from West~East. The shadow size varies for different times of day. It looks to be produced by the sun(?) Over the course of an in game day the shadow will gradually shrink and disappear, or grow from nothing. Is this design intended? It breaks my "immersion" and messes with my eyes, please fix. <3

Connection Specs
- Type of internet connection/provider: TDS Telecom 15 Mb/s

PC Specs
-=-=-=-=- System Information -=-=-=-=-
OS Microsoft Windows 7 Home Premium 64bit (build 7601: Service Pack 1)
CPU Intel Core i5 3570k
GPU Nvidia EVGA GeForce GTX 560 Ti 448 Cores Classified
GPU DRIVER 320.49 WHQL
RAM 8GB
DISPLAY 1920 x 1080 w/ 60Hz
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

go back to release 314.22, those drivers are bad on fermi cards