As of the June 30th hot fix, I've been experiencing frame drops in certain areas, as well as in dungeons.

Most notably, when running through the arch/tower in Idyllshire my frames drop below 20 fps, but then rise to 60 once out of the arch. It does likewise in dungeons, during boss fights and trash pulls. I've monitored my GPU temp, not the problem. I reinstalled my drivers, not the problem. I'm not exactly sure what the problem is, has anyone else been experiencing this since the hot fix?