/vr/ - Retro Games

Alright guys I got a problem for you.

I open Retroarch.
Trying to play some Ocarina of Time.
I go and get MUPEN64+ core.
I soon discover it runs poorly.
I am told online to change my graphics driver from OPENGL to D3D.
I make the change and now Ocarina of Time runs perfectly.
Decide to switch over to some SNES games.
I went into the settings in BSNES to see if changing to D3D would allow me to use accuracy mode rather than balanced mode.
It still would not.
I was able to play Super Mario World just fine for the remainder of the session.
When I closed Retroarch and reopened it I was no longer able to play SNES games using any BSNES core.
Even mercury cores for BSNES will not work. The games appear to load and then crash at the last second.
I thought this was perhaps a problem caused by changing the video driver to D3D.
I go into the settings for each one of the BSNES cores and I intend to change them all back to OPENGL.
They are already set to OPENGL despite how I changed them earlier.
I try changing them to D3D as well and that still crashes.
There is no error message aside from "Retroarch.exe has stopped working."
Does anybody know what I did wrong here? I am genuinely confused about all this. I even deleted the core files and redownloaded fresh new ones and it still crashes just the same.