I’ve had the low-framerate choppiness happen to me alot from time to time. Loading Lion’s arch or any place that happens to have 50 people right at the landing point you’re loading into. I used to exit the game and come back in too until I found this workaround. Set your game resolution to full screen then switch it back to windowed ( or vice versa if you play in full, switch to windowed then go back to full) and it will fix itself. No need for relog. ^^