Weird FPS issue

[Sinurg]

So I never ran into this issue before Blade and Soul, but I maxed out my FPS Cap and turned on 'Show FPS' and I'm always getting 15-20 frames. My PC is pretty decent and doesn't have this issue on other games at all, mainly cause I can turn down the settings and the FPS goes up, but thats what makes this situation weird. I've tried turning down my graphics and theres no difference. At max graphics I get 15-20, at lowest I get 15-20. Any ideas on why this could be or how I could fix it? Doesn't affect my leveling, but I dont dare do PvP with this weird lag.