This is not manageable.
After the black screens, as reproduced by Rémi, (fixed I hope)
After the grey stripes, (fixed too, I think with DevCaps2)
There is still:
 - the yellow middle stripe, with failing IDirect3DDevice9::StretchRect
 - the subtitle blending issue, with absolutly no messages #6542

We have enough to do with the delayed pictures not displayed, in case of
subtitles and the broken audio in so many situations (not to mention the
volume delay...)