I crash constantly when entering explorer zone. Desert, Orchard and Searing Heights I'll crash if I've been playing for a while and try to zone in.

In the King's Forest I will crash each and every time. Here is a run down of my last attempt to play in this area.

Zone in. Crash. Relog.
Run to Unquiet Graves. Complete quest. Finish out. Crash. Relog.
Recall. Immediately step into King's Forest. Crash. Relog.
Run to Impossible Demands. Complete quest. Finish out. Crash. Relog.

I'd really like to play these quest but I can't without a very patient party. I tried reinstalling the game and it still crashes. Is there any help for this?