OK that would seem to indicate an issue with LAV and or your OS settings as opposed to a specific MP/LAV problem.MPC-HC with the standard setup - problem exists
What intel graphics do you have and which version of LAV are you using?
Can you try setting a different hardware decoder in the LAV as shown in the attached screenshot, start with Intel QuickSync but also DXVA2 (copy-back), D3D11 and None with the problem video and let us know the results. Also please try with the VC1 option disabled.