laggs in dungeon?

Hey guys,
i can do quests and pvp(av/ws/arathi) without any problems but as soon i enter any dungeon, its starts to lagg.
it looks like i only have 15-20fps.. somebody know this problem? any hints for fixing this problem?
thanks alot
i can do quests and pvp(av/ws/arathi) without any problems but as soon i enter any dungeon, its starts to lagg.
it looks like i only have 15-20fps.. somebody know this problem? any hints for fixing this problem?
thanks alot