Welp, I tried that build with Sonic Colors on my son's PC, which had been running with a slight drop in frame rate as compared to on the actual Wii. For whatever reason, it actually ran slightly worse. Had more hiccups and such, and seemed to be slower in general. So I went back to the official version and changed the internal resolution to be 1x, which means to use the actual original Wii resolution, and surprise, surprise, runs as smooth as the Wii itself. So that was good to know.