Yes it is not working, I'm on all Ultra!
It's always like before, works just extreme not in Ultra!
Ultra work in cutscene, extreme no ! and Extreme work close like your screenshot, but not Ultra !
Also I do not think it's a driver issue...
Here postprocessing on extreme, work

Here postprocessing on ultra, dont work

Click on screen for zoom
In cutscenePostprocessing on extreme, bokeh DOF dont work

Postprocessing on ultra, bokeh DOF work

We can not have both with ultra, must make a choice unfortunately...