Game crashes in certain zones

Hello,

Does anyone experience crashes in certain zones ? Dalaran in particular which happens few moments after I get teleported there. Not always but often enough to make it an annoyance. Especially frustrating is the rather constant crash in Wintergrasp during battle which leaves me with restarting the game and rejoining the battle which often is full and I get left out.
Might it be because of an addon ? May be the realm itself (Frostmourne) which I doubt. Any info would be helpful.

Thanks!

Hello, yes I do. Obviously when I fly over Wintergrasp/Icecrown.

Did you try applying Large Address Aware to WoW?