Guild Wars 2

If I walk east of the Factorium waypoint in Black Citadel, my FPS drops from the mid 50s to less than 5 almost immediately. If I turn around and walk back west past the waypoint, it immediately rises back up to the mid 50s.

Is there something weird going on in that part of the city? Anyone else notice this?

I’ve noticed it went down to 25 for me when i was there last time for daily vista
and that nearly what i have at world bosses.