(2019-02-21, 17:06)markrankin Wrote: (2019-02-20, 17:47)madjockxbmc Wrote: Its maybe because you have DXVA options ticked in the Trade for Performance, and thus its lowering the demand on the GPU as you are using DXVA (not 100%), I think its because you have your scaling settings so high, when you go to D3D11 and it does not have these trade for performance options then that could be the issue.
Select scale chroma separately if it helps performance in Trade for performance options then try D3D11 again.
DXVA options unticked in Trade for Performance now. Also in LAV VIDEO Filter D3D11 and automatic. The result is video hangs.
If I change automatic to NVIDIA GT 1030 then works.
Scale chroma separately is ticket in both configs.
Thank you again.
I guess the answer is "it shouldn't", but that is not really an answer. Could be a driver thing I guess, but if its working ok then why mess with it I suppose.
from madVR support forum
Basically (as of current madVR version; 'DXVA' here means either DXVA2 or D3D11):
- as per nevcairiel's advice, Intel QuickSync and NVIDIA CUVID are obsolete compared to DXVA copy-back and are not recommended
- native variants of DXVA prevent use of madVR's IVTC and black bar detection. They also consume a bit more VRAM (few hundreds MBs) which can be an issue if you have a discrete card with very small VRAM and you want a big decoder queue.
- copy-back variants of DXVA are not recommended for iGPUs for performance reasons. They can also have performance problems with discrete GPUs in rare situations like UHD on much older systems.
- DXVA2 native can have chroma quality issues on some GPUs
- D3D11 native prevents using hardware deinterlacing
- D3D11 copy-back is slower than DXVA2 copy-back and has no quality advantages, so you have no reason to use it really
- D3D11 native is slightly faster than DXVA2 native, and doesn't have the chroma quality issue, so is interesting if you're not using any of: IVTC, black bar detection, hardware deinterlacing.
https://forum.doom9.org/showthread.php?p...ost1866277