Performance has been worse since 10.2 came out and mostly it comes down to compute effects, liquid detail and environment detail, ground clutter that hampers performance significant if you put it on ultra.
I have lowered it to fair and good settings and my fps has gone up.
Also before 10.2 i had everything on ultra and every single setting on max with no issues had a stable framerate now it has been broken.
This needs to be investigated since playing on a high end machine this should not happen not even lowering my graphics to gain performance.