Windows + OpenPHT + DXVA2 = crushed blacks. :(

I've noticed that with OpenPHT color space set to 16-235, my GPU (Intel Haswell NUC) set to FULL RANGE, and my Samsung KS8000 HDMI level set to LOW (limited), that DXVA2 is producing crushed blacks. No issues, though, with software decoding.

Interestingly, Kodi does not have this issue with the same settings (Kodi also set to 16-235).

Is there a reason why DXVA2 would produce crushed blacks?

Thanks.