Not sure if I’m hallucinating, but since the last update (I think), it seems like the 3D effect of dishonored 2 has been reduced quite a bit. You mentioned you made some changes which may have affected AC:Odyssey (which is still good), perhaps this is the same thing. Seems closer to flat than 3D, although there is still some little bit of 3D-ness. Played with all the settings to no avail.
But its very noticeable in Dishonored 2 now. Liked it much better the previous way.
Unless I’m hallucinating, in which case I liked my hallucinations better before.