You might use a second process, starting near the top, with a smaller layer thickness. Let's say you run most of the part at 0.2 mm layer thickness. Apply a second process, starting a mm or so from the top with an 0.1 mm layer thickness.
Like using the thin Legos where the curvature dictates, but the regular thickness Legos for the bulk of the build. You get the speed of the bulk layer thickness for the vast majority of the part, and the detail (and slowness) of the thinner layers only where you need them.
I think S3D has a tutorial for this on their tutorials page: http://www.simplify3d.com/support/tutorials/
p.s.: That "w0nk" isn't your amateur radio callsign, is it? If not, I wish I could move to 0-land (Colorado etc.) just to apply for that call --- I'm forever watching the wonks on cable news instead of hamming it up on the air or playing with my M2.... DE W8ABZ