Those have been my settings so far.. If I use those at 1080p I get about 90FPS average, if I drop down to 1600 x 900 then I get 130FPS, haven't seen it dip below 110FPS on 1600.
This is on a i7 4790K, 12gb Ram, GTX 1080 8gb.. I am getting better performance using higher settings in A18 than I did in A17 and the skipping, random pauses seem to have all but gone for me.