Sounds very much like the issue of a player not handling 10-bit encodes. The easiest way to solve that would indeed be to first get rid of the whole pack, then install just MPC-HC, Haali splitter, and LAV filters, and set the video decoding to the LAV external filter. Output to EVR curstom pres. or something similar. Though I'm not 100% certain the Haali is even needed, might not be since MPC has its own splitter anyway.