Ironically, using DxO v11 I cannot see any adjustments at all !!!
In PSu Preferences the following settings can be chosen:
- None
- Elementary
- Approximate
What are the effects of the different settings? "None" is pretty self-explanatory, but the difference between the other two is less clear to me.
Also:
I am trying to see the adjustments made to my DNGs made in DxO . Currently my settings are "approximate" assuming that imitates rendering the thumbnails as closely to DxO as possible.
But: when I adjust files in DxO the thumbs remain exactly the same in PSu, even when I re-build the thumbnails

DxO stores its settings in *.dop sidecar files (stored in the same folder). Does PSu read these files when trying to emulate the DxO adjustments? How can I force PSu to read these sidecars? Reading XMP from the adjusted DNG does not make a difference, even if followed by a thumbnail rebuild.
I have also tried "elementary" and "none" - the thumbnails always look exactly the same!