For the love of god Gui issue

I did a series of stupid things.  I assumed rpcs3 was stand alone and all the configuration files where self contained in it's extracted folder.  So rather than read and update I just began running several versions in parallel.  Now all the fancy new options for rendering do not show up in the gui under the gpu tab.  I'm assuming I have to find some ini or config file that was initially generated and delete it.  Because I'm not getting crashes or have any real troubleshooting issues I would love to know how to do a clean install.  So if anyone could point me in the right direction I'd appreciate it.