[vineet381]

Hi,
So I reninstalled AV, MPC-HC to 32 bit version, Reclock was uninstalled and resintalled too, LAV and Reclock does not have two distinct versions for 32 and 64 bits. When I play mkv using MPC-HC, reclock gives me an error audio not compatible with the 6.1 system and hardware does not support 16bit, 48KHz. I have realtec sound card and its settings has 16bit, 48KHZ in it. The video plays fine. It was stuettering before, had to select DXVA in madVR upscaling settings.
In Kodi I am playing files stored on my NAS through NFS. I am getting 5.1 surround (which is my set up) through Kodi on "WASPI default" when I play through its default player.
The Realclock settings are exactly the same as described in OP. I played around with it selectings Waveout etc but still the same result.
The mediaconfig settings are as follows for mkv, one thing to note is even non mkv files are not playable.

-<rule filetypes="mkv">
<source filter="lavsource"/>
<splitter filter="avsplitter"/>
<video filter="lavvideo"/>
<audio filter="lavaudio"/>
<subs filter="xysubfilter"/>
</rule>

Thanks