Graphically gw2 isn't too demanding but still we are talking about intel igp here. Also you need beefy cpu epecially when participating in events that have lots of people. For exmple sli indeed working with game but weak cpu actually chokes the frame rate
I don't think it'll be playable at all, especially during world events. Even if you turn culling on to limit how many people are displayed, you still won't get anywhere near 30 fps. Probably no more than 20. =/
Graphically gw2 isn't too demanding but still we are talking about intel igp here. Also you need beefy cpu epecially when participating in events that have lots of people. For exmple sli indeed working with game but weak cpu actually chokes the frame rate