Please consider adding some settings for spell effect details to the options, and maybe some sort of effect culling. This is something that’s really needed for large WvW battles, and also large-scale PvE fights with lots of people though it doesn’t seem to effect your FPS in PVE nearly as much as it does in WvW, but in either case it does make it difficult to see what’s actually happening even if you’re getting a decent FPS.
There’s just too many things being drawn at once, especially particle effects. We don’t really need to see the wiggly lines around every single AoE effect, do we? In WvW it could be the difference between playable zerg fights or the 1fps slideshow version.