Guild Wars 2

So, my pc is not that good, my GW2 usually run at 20-30 fps, but today I logged in and I got 50+fps at all time, anyone know why is this happening?

https://forum-en.gw2archive.eu/forum/info/updates/Game-Update-Notes-March-16-2015/first#post4912416

21 hours ago:
“Fixed a performance issue with rendering the UI.”

They broke the framerate over a week ago, and now they fixed it. In fixing it I think they may have made it better, since the UI has always been a bottleneck.