Normal
Adding ffdshow post-processing (Lanczos 3) improves matters for progressive content but breaks deinterlacing when using LAV software decoding. Adding ffdshow post-processing (Lanczos 3) works for both progressive and interlaced content when using LAV CUDA decoding, but weird artefacts appear in the image. ffdshow post-processing also changes chroma for some reason (colours get brighter). Not sure if there's a fully working combination as a temporary work-around. I doubt this would work with DXVA2 either.
Adding ffdshow post-processing (Lanczos 3) improves matters for progressive content but breaks deinterlacing when using LAV software decoding. Adding ffdshow post-processing (Lanczos 3) works for both progressive and interlaced content when using LAV CUDA decoding, but weird artefacts appear in the image. ffdshow post-processing also changes chroma for some reason (colours get brighter).
Not sure if there's a fully working combination as a temporary work-around. I doubt this would work with DXVA2 either.