Happened while teleporting to East Shroud from Mor Dhona. First went into a incredible 1-2FPS spike, and then the crash occured?

My PC:

Win 8.1 Pro x64
AMD R9 270X(Sapphire)
16GB Crucial DDR3L RAM(4x4)
Intel i5 4670K

It's been happening frequently lately i dunno what the problem is?