Playing with the display options, one of them I don't see much use for - if you turn off the map you can't see what you're doing.
My base FPS (with everything on) is 28.
With terrain off is goes to 55
UI off gives no change
Image effects off goes to 37
Using:
MacBook Pro (Retina, 13-inch, Early 2015)
Processor 2.7 GHz Intel Core i5
Memory 8 GB 1867 MHz DDR3
Graphics Intel Iris Graphics 6100 1536 MB