Guild Wars 2

When the golem begins to transform I get a bad FPS drop (to 3-5 FPS) for a few seconds, it happens on my PC and laptop, too. Can post more details and specs if needed.

Not really a bug, seems to just be how the game is built. Smoke effects are terribly demanding. Do you know the centaur trebuchets in west Gendarran Fields? Stand in the aoe that they hit in and watch your FPS drop similarly.

Grenade spamming on an engineer also kills my framerate if the camera is zoomed in near the explosions (i.e. throwing grenades on top of yourself in tight areas).