In DirectShow video players, e.g. MPC-HC, the only filter that can do tone mapping is madVR video renderer. So without SVP the best possible chain for HDR playback is MPC-HC -> madVR. Unfortunately ffdshow filter doesn't support neither HDR not 10-bit video, so when we insert ffdshow between MPC-HC and madVR all we get is washed-out colors as madVR is unable to do tone mapping in this case.
If you want real 10-bit - use mpv or VLC.