I'm just fiddling wth the settings now. It works, sort of lol. And I'm playing at 1080p. What are your PC specs?
Pic:
https://c2.staticflickr.com/6/5679/22537456354_cdca00db6f_b.jpg
I really like this pic. It's not just dof but the colors, speculars etc. I tried your 1.1 settings but it didn't look like this color wise. Might be that it's working better with 1080p overall. I am running at 2560*1440.
Your settings worked fine with galaxy BG set to 8k. EDFX is lagging alot with the same BG setting but works fine with 4k resolution.