vsfilter? kmplayer? These two together will not show much cohesion, try MPCHC, hell, MPCHC's own internal subs renderer is more efficient.
I had to switch to KMPlayer because MPC-HC doesn't have an interface to use with a remote control. It's difficult to see the tiny little windows letters from 7-8 feet away 

Anyway, I don't know what happened, I reinstalled KMPlayer and VSFilter (same versions as before), configured carefully the zillons of options KMplayer has, and now everything is running good, including aero and VSFilter. Plus, from starting KMPlayer to shutting down the PC, I can control everything with the remote

. And the subs with VSFilter are shown the same as with MPC-HC. Tried several files with karaoke and other effects and they are all properly rendered :3
This is what I needed, something with big letters where I can access most of the player functions:

As far as I know MPC-HC doesn't have anything like that
