[markrankin]

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.