SE only invested in the graphical design and not the engine. That's the main problem. Without a properly and efficiently running engine it's impossible to make a good mmorpg. Still SE insists on spamming us with small ideas from other mmos instead of fixing horribly broken stuff.
And this game is definately not playable on a $25 gpu. You can start the game but as soon as the scene gets full your framerate will be at the bottom.