I had to reinstall, since SAF codec pack uninstalls the default MPC audio codecs, but as i suspected HD channels started stuttering and also SD channels when there's overlay graphics like menus ontop. Reinstalled SAF, no more stutter. IF the SAF pack doesn't update the MPC-HC h264. codec, i'd say the cullprit is the MPC-HC audio codec. Either way, im still having massive problems. No EPG and now if i dont manually use the preview feature in TVServer config before starting Mediaportal, it crashes when i open tv. Only way to recover is to reboot the system.