Sounds about right to me, are you actually playing on a laptop? if not then switch it to desktop and see what mileage you get, its its not to your liking then you can start scaling things back, I'de start with the HDR renderer, shadows, Occlusion, and shadow resolution, grass also seems to be a large resource hog usually setting that to low nets a pretty nice fps increase and there is still plenty of grass around on that setting if you like it.