alright, FINE, I did a rudimentary test myself with Fraps. Same exact scene--on the bow admiring the kiel canal. counted 10 seconds when mission finally loaded. In the following file you'll find a bunch of excel files, with titles. Chronologically notice the file save/modify date. Every subsequent file included the enhancements from the previous file.
Finally, there are three screenshots showing my final nHancer settings.
This is with everything maxed out in SHV options for graphics, at 1280 by 720 (native rez for my Optoma HD70 projector at 60hz).
Anyway--most settings caused a frame or two difference--except the option for "Super" transparency option. When I unselected that option, I pulled in an extra 8 or 9 FPS.
Good luck!
Click here for the file.