Your system has much more power and resources than mine. I use GOM player and it runs smooth. I just ran it through VLC player also with smooth playback. So it may be something else than the player. I have CODEC automatically checked and update...
You might try what Tribar said above. In the past when I used regular controllers, I found that sub par cables caused that problem. Get a good quality cable and try it.
That's what I'm suspecting as well. May just switch over to the original remote for the time being. The range has always been less than stellar since switching to the Smart Controller, had far better results with the original. But it sure is...